diff --git a/ManagedIdentities/src/V1/Client/ManagedIdentitiesServiceClient.php b/ManagedIdentities/src/V1/Client/ManagedIdentitiesServiceClient.php
index 622860c2894c..55901d2a36fd 100644
--- a/ManagedIdentities/src/V1/Client/ManagedIdentitiesServiceClient.php
+++ b/ManagedIdentities/src/V1/Client/ManagedIdentitiesServiceClient.php
@@ -49,6 +49,7 @@
 use Google\LongRunning\Client\OperationsClient;
 use Google\LongRunning\Operation;
 use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: API Overview
@@ -251,14 +252,14 @@ public static function locationName(string $project, string $location): string
      * listed, then parseName will check each of the supported templates, and return
      * the first match.
      *
-     * @param string $formattedName The formatted name string
-     * @param string $template      Optional name of template to match
+     * @param string  $formattedName The formatted name string
+     * @param ?string $template      Optional name of template to match
      *
      * @return array An associative array from name component IDs to component values.
      *
      * @throws ValidationException If $formattedName could not be matched.
      */
-    public static function parseName(string $formattedName, string $template = null): array
+    public static function parseName(string $formattedName, ?string $template = null): array
     {
         return self::parseFormattedName($formattedName, $template);
     }
@@ -313,6 +314,9 @@ public static function parseName(string $formattedName, string $template = null)
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException
diff --git a/ManagedKafka/src/V1/Client/ManagedKafkaClient.php b/ManagedKafka/src/V1/Client/ManagedKafkaClient.php
index 2b733c1a9131..c7df5180f63c 100644
--- a/ManagedKafka/src/V1/Client/ManagedKafkaClient.php
+++ b/ManagedKafka/src/V1/Client/ManagedKafkaClient.php
@@ -57,6 +57,7 @@
 use Google\LongRunning\Client\OperationsClient;
 use Google\LongRunning\Operation;
 use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: The service that a client application uses to manage Apache Kafka clusters,
@@ -304,14 +305,14 @@ public static function topicName(string $project, string $location, string $clus
      * listed, then parseName will check each of the supported templates, and return
      * the first match.
      *
-     * @param string $formattedName The formatted name string
-     * @param string $template      Optional name of template to match
+     * @param string  $formattedName The formatted name string
+     * @param ?string $template      Optional name of template to match
      *
      * @return array An associative array from name component IDs to component values.
      *
      * @throws ValidationException If $formattedName could not be matched.
      */
-    public static function parseName(string $formattedName, string $template = null): array
+    public static function parseName(string $formattedName, ?string $template = null): array
     {
         return self::parseFormattedName($formattedName, $template);
     }
@@ -366,6 +367,9 @@ public static function parseName(string $formattedName, string $template = null)
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException
diff --git a/MapsFleetEngineDelivery/src/V1/Client/DeliveryServiceClient.php b/MapsFleetEngineDelivery/src/V1/Client/DeliveryServiceClient.php
index e92ee44d161e..80ca0d9306f5 100644
--- a/MapsFleetEngineDelivery/src/V1/Client/DeliveryServiceClient.php
+++ b/MapsFleetEngineDelivery/src/V1/Client/DeliveryServiceClient.php
@@ -48,6 +48,7 @@
 use Google\Maps\FleetEngine\Delivery\V1\UpdateDeliveryVehicleRequest;
 use Google\Maps\FleetEngine\Delivery\V1\UpdateTaskRequest;
 use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: The Last Mile Delivery service.
@@ -198,14 +199,14 @@ public static function taskTrackingInfoName(string $provider, string $tracking):
      * listed, then parseName will check each of the supported templates, and return
      * the first match.
      *
-     * @param string $formattedName The formatted name string
-     * @param string $template      Optional name of template to match
+     * @param string  $formattedName The formatted name string
+     * @param ?string $template      Optional name of template to match
      *
      * @return array An associative array from name component IDs to component values.
      *
      * @throws ValidationException If $formattedName could not be matched.
      */
-    public static function parseName(string $formattedName, string $template = null): array
+    public static function parseName(string $formattedName, ?string $template = null): array
     {
         return self::parseFormattedName($formattedName, $template);
     }
@@ -260,6 +261,9 @@ public static function parseName(string $formattedName, string $template = null)
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException
diff --git a/MapsRouteOptimization/src/V1/Client/RouteOptimizationClient.php b/MapsRouteOptimization/src/V1/Client/RouteOptimizationClient.php
index 440aa0e2093c..4a2e092d8841 100644
--- a/MapsRouteOptimization/src/V1/Client/RouteOptimizationClient.php
+++ b/MapsRouteOptimization/src/V1/Client/RouteOptimizationClient.php
@@ -39,6 +39,7 @@
 use Google\Maps\RouteOptimization\V1\OptimizeToursResponse;
 use Google\Maps\RouteOptimization\V1\ShipmentRoute;
 use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: A service for optimizing vehicle tours.
@@ -213,6 +214,9 @@ private function createOperationsClient(array $options)
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException
diff --git a/MediaTranslation/src/V1beta1/Client/SpeechTranslationServiceClient.php b/MediaTranslation/src/V1beta1/Client/SpeechTranslationServiceClient.php
index fff9ba7bc16d..43e2cd73f121 100644
--- a/MediaTranslation/src/V1beta1/Client/SpeechTranslationServiceClient.php
+++ b/MediaTranslation/src/V1beta1/Client/SpeechTranslationServiceClient.php
@@ -33,6 +33,7 @@
 use Google\ApiCore\Transport\TransportInterface;
 use Google\ApiCore\ValidationException;
 use Google\Auth\FetchAuthTokenInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: Provides translation from/to media types.
@@ -139,6 +140,9 @@ private static function getClientDefaults()
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException
diff --git a/Memcache/src/V1/Client/CloudMemcacheClient.php b/Memcache/src/V1/Client/CloudMemcacheClient.php
index 4d0fc0e5e9d4..1833f2507985 100644
--- a/Memcache/src/V1/Client/CloudMemcacheClient.php
+++ b/Memcache/src/V1/Client/CloudMemcacheClient.php
@@ -49,6 +49,7 @@
 use Google\LongRunning\Client\OperationsClient;
 use Google\LongRunning\Operation;
 use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: Configures and manages Cloud Memorystore for Memcached instances.
@@ -233,14 +234,14 @@ public static function locationName(string $project, string $location): string
      * listed, then parseName will check each of the supported templates, and return
      * the first match.
      *
-     * @param string $formattedName The formatted name string
-     * @param string $template      Optional name of template to match
+     * @param string  $formattedName The formatted name string
+     * @param ?string $template      Optional name of template to match
      *
      * @return array An associative array from name component IDs to component values.
      *
      * @throws ValidationException If $formattedName could not be matched.
      */
-    public static function parseName(string $formattedName, string $template = null): array
+    public static function parseName(string $formattedName, ?string $template = null): array
     {
         return self::parseFormattedName($formattedName, $template);
     }
@@ -295,6 +296,9 @@ public static function parseName(string $formattedName, string $template = null)
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException
diff --git a/MigrationCenter/src/V1/Client/MigrationCenterClient.php b/MigrationCenter/src/V1/Client/MigrationCenterClient.php
index dcb131fa2b6e..1e1db82da9b0 100644
--- a/MigrationCenter/src/V1/Client/MigrationCenterClient.php
+++ b/MigrationCenter/src/V1/Client/MigrationCenterClient.php
@@ -101,6 +101,7 @@
 use Google\LongRunning\Client\OperationsClient;
 use Google\LongRunning\Operation;
 use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: Service describing handlers for resources.
@@ -499,14 +500,14 @@ public static function sourceName(string $project, string $location, string $sou
      * listed, then parseName will check each of the supported templates, and return
      * the first match.
      *
-     * @param string $formattedName The formatted name string
-     * @param string $template      Optional name of template to match
+     * @param string  $formattedName The formatted name string
+     * @param ?string $template      Optional name of template to match
      *
      * @return array An associative array from name component IDs to component values.
      *
      * @throws ValidationException If $formattedName could not be matched.
      */
-    public static function parseName(string $formattedName, string $template = null): array
+    public static function parseName(string $formattedName, ?string $template = null): array
     {
         return self::parseFormattedName($formattedName, $template);
     }
@@ -561,6 +562,9 @@ public static function parseName(string $formattedName, string $template = null)
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException
diff --git a/Monitoring/src/V3/Client/AlertPolicyServiceClient.php b/Monitoring/src/V3/Client/AlertPolicyServiceClient.php
index ae1115fe9fec..81ad251d51ad 100644
--- a/Monitoring/src/V3/Client/AlertPolicyServiceClient.php
+++ b/Monitoring/src/V3/Client/AlertPolicyServiceClient.php
@@ -40,6 +40,7 @@
 use Google\Cloud\Monitoring\V3\ListAlertPoliciesRequest;
 use Google\Cloud\Monitoring\V3\UpdateAlertPolicyRequest;
 use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: The AlertPolicyService API is used to manage (list, create, delete,
@@ -279,14 +280,14 @@ public static function projectAlertPolicyConditionName(string $project, string $
      * listed, then parseName will check each of the supported templates, and return
      * the first match.
      *
-     * @param string $formattedName The formatted name string
-     * @param string $template      Optional name of template to match
+     * @param string  $formattedName The formatted name string
+     * @param ?string $template      Optional name of template to match
      *
      * @return array An associative array from name component IDs to component values.
      *
      * @throws ValidationException If $formattedName could not be matched.
      */
-    public static function parseName(string $formattedName, string $template = null): array
+    public static function parseName(string $formattedName, ?string $template = null): array
     {
         return self::parseFormattedName($formattedName, $template);
     }
@@ -341,6 +342,9 @@ public static function parseName(string $formattedName, string $template = null)
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException
diff --git a/Monitoring/src/V3/Client/GroupServiceClient.php b/Monitoring/src/V3/Client/GroupServiceClient.php
index 0d70cc2c18b7..8decd079484c 100644
--- a/Monitoring/src/V3/Client/GroupServiceClient.php
+++ b/Monitoring/src/V3/Client/GroupServiceClient.php
@@ -41,6 +41,7 @@
 use Google\Cloud\Monitoring\V3\ListGroupsRequest;
 use Google\Cloud\Monitoring\V3\UpdateGroupRequest;
 use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: The Group API lets you inspect and manage your
@@ -204,14 +205,14 @@ public static function projectGroupName(string $project, string $group): string
      * listed, then parseName will check each of the supported templates, and return
      * the first match.
      *
-     * @param string $formattedName The formatted name string
-     * @param string $template      Optional name of template to match
+     * @param string  $formattedName The formatted name string
+     * @param ?string $template      Optional name of template to match
      *
      * @return array An associative array from name component IDs to component values.
      *
      * @throws ValidationException If $formattedName could not be matched.
      */
-    public static function parseName(string $formattedName, string $template = null): array
+    public static function parseName(string $formattedName, ?string $template = null): array
     {
         return self::parseFormattedName($formattedName, $template);
     }
@@ -266,6 +267,9 @@ public static function parseName(string $formattedName, string $template = null)
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException
diff --git a/Monitoring/src/V3/Client/MetricServiceClient.php b/Monitoring/src/V3/Client/MetricServiceClient.php
index bf2cf9e8163e..2af5c2610c17 100644
--- a/Monitoring/src/V3/Client/MetricServiceClient.php
+++ b/Monitoring/src/V3/Client/MetricServiceClient.php
@@ -45,6 +45,7 @@
 use Google\Cloud\Monitoring\V3\ListTimeSeriesRequest;
 use Google\Cloud\Monitoring\V3\TimeSeries;
 use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: Manages metric descriptors, monitored resource descriptors, and
@@ -338,14 +339,14 @@ public static function workspaceName(string $project): string
      * listed, then parseName will check each of the supported templates, and return
      * the first match.
      *
-     * @param string $formattedName The formatted name string
-     * @param string $template      Optional name of template to match
+     * @param string  $formattedName The formatted name string
+     * @param ?string $template      Optional name of template to match
      *
      * @return array An associative array from name component IDs to component values.
      *
      * @throws ValidationException If $formattedName could not be matched.
      */
-    public static function parseName(string $formattedName, string $template = null): array
+    public static function parseName(string $formattedName, ?string $template = null): array
     {
         return self::parseFormattedName($formattedName, $template);
     }
@@ -400,6 +401,9 @@ public static function parseName(string $formattedName, string $template = null)
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException
diff --git a/Monitoring/src/V3/Client/NotificationChannelServiceClient.php b/Monitoring/src/V3/Client/NotificationChannelServiceClient.php
index 361ddf6b6df9..8923b2fb4717 100644
--- a/Monitoring/src/V3/Client/NotificationChannelServiceClient.php
+++ b/Monitoring/src/V3/Client/NotificationChannelServiceClient.php
@@ -47,6 +47,7 @@
 use Google\Cloud\Monitoring\V3\UpdateNotificationChannelRequest;
 use Google\Cloud\Monitoring\V3\VerifyNotificationChannelRequest;
 use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: The Notification Channel API provides access to configuration that
@@ -276,14 +277,14 @@ public static function projectNotificationChannelName(string $project, string $n
      * listed, then parseName will check each of the supported templates, and return
      * the first match.
      *
-     * @param string $formattedName The formatted name string
-     * @param string $template      Optional name of template to match
+     * @param string  $formattedName The formatted name string
+     * @param ?string $template      Optional name of template to match
      *
      * @return array An associative array from name component IDs to component values.
      *
      * @throws ValidationException If $formattedName could not be matched.
      */
-    public static function parseName(string $formattedName, string $template = null): array
+    public static function parseName(string $formattedName, ?string $template = null): array
     {
         return self::parseFormattedName($formattedName, $template);
     }
@@ -338,6 +339,9 @@ public static function parseName(string $formattedName, string $template = null)
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException
diff --git a/Monitoring/src/V3/Client/QueryServiceClient.php b/Monitoring/src/V3/Client/QueryServiceClient.php
index c9f5c8943803..d56bf0ede01b 100644
--- a/Monitoring/src/V3/Client/QueryServiceClient.php
+++ b/Monitoring/src/V3/Client/QueryServiceClient.php
@@ -34,6 +34,7 @@
 use Google\Auth\FetchAuthTokenInterface;
 use Google\Cloud\Monitoring\V3\QueryTimeSeriesRequest;
 use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: The QueryService API is used to manage time series data in Cloud
@@ -144,6 +145,9 @@ private static function getClientDefaults()
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException
diff --git a/Monitoring/src/V3/Client/ServiceMonitoringServiceClient.php b/Monitoring/src/V3/Client/ServiceMonitoringServiceClient.php
index 1a6b71cc14ae..757c2b8240df 100644
--- a/Monitoring/src/V3/Client/ServiceMonitoringServiceClient.php
+++ b/Monitoring/src/V3/Client/ServiceMonitoringServiceClient.php
@@ -46,6 +46,7 @@
 use Google\Cloud\Monitoring\V3\UpdateServiceLevelObjectiveRequest;
 use Google\Cloud\Monitoring\V3\UpdateServiceRequest;
 use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: The Cloud Monitoring Service-Oriented Monitoring API has endpoints for
@@ -285,14 +286,14 @@ public static function serviceLevelObjectiveName(string $project, string $servic
      * listed, then parseName will check each of the supported templates, and return
      * the first match.
      *
-     * @param string $formattedName The formatted name string
-     * @param string $template      Optional name of template to match
+     * @param string  $formattedName The formatted name string
+     * @param ?string $template      Optional name of template to match
      *
      * @return array An associative array from name component IDs to component values.
      *
      * @throws ValidationException If $formattedName could not be matched.
      */
-    public static function parseName(string $formattedName, string $template = null): array
+    public static function parseName(string $formattedName, ?string $template = null): array
     {
         return self::parseFormattedName($formattedName, $template);
     }
@@ -347,6 +348,9 @@ public static function parseName(string $formattedName, string $template = null)
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException
diff --git a/Monitoring/src/V3/Client/SnoozeServiceClient.php b/Monitoring/src/V3/Client/SnoozeServiceClient.php
index d616e5fad17f..8b754a2cd0e8 100644
--- a/Monitoring/src/V3/Client/SnoozeServiceClient.php
+++ b/Monitoring/src/V3/Client/SnoozeServiceClient.php
@@ -39,6 +39,7 @@
 use Google\Cloud\Monitoring\V3\Snooze;
 use Google\Cloud\Monitoring\V3\UpdateSnoozeRequest;
 use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: The SnoozeService API is used to temporarily prevent an alert policy from
@@ -241,14 +242,14 @@ public static function workspaceName(string $project): string
      * listed, then parseName will check each of the supported templates, and return
      * the first match.
      *
-     * @param string $formattedName The formatted name string
-     * @param string $template      Optional name of template to match
+     * @param string  $formattedName The formatted name string
+     * @param ?string $template      Optional name of template to match
      *
      * @return array An associative array from name component IDs to component values.
      *
      * @throws ValidationException If $formattedName could not be matched.
      */
-    public static function parseName(string $formattedName, string $template = null): array
+    public static function parseName(string $formattedName, ?string $template = null): array
     {
         return self::parseFormattedName($formattedName, $template);
     }
@@ -303,6 +304,9 @@ public static function parseName(string $formattedName, string $template = null)
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException
diff --git a/Monitoring/src/V3/Client/UptimeCheckServiceClient.php b/Monitoring/src/V3/Client/UptimeCheckServiceClient.php
index f166cb860fcd..d6dd0ab10973 100644
--- a/Monitoring/src/V3/Client/UptimeCheckServiceClient.php
+++ b/Monitoring/src/V3/Client/UptimeCheckServiceClient.php
@@ -41,6 +41,7 @@
 use Google\Cloud\Monitoring\V3\UpdateUptimeCheckConfigRequest;
 use Google\Cloud\Monitoring\V3\UptimeCheckConfig;
 use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: The UptimeCheckService API is used to manage (list, create, delete, edit)
@@ -220,14 +221,14 @@ public static function uptimeCheckConfigName(string $project, string $uptimeChec
      * listed, then parseName will check each of the supported templates, and return
      * the first match.
      *
-     * @param string $formattedName The formatted name string
-     * @param string $template      Optional name of template to match
+     * @param string  $formattedName The formatted name string
+     * @param ?string $template      Optional name of template to match
      *
      * @return array An associative array from name component IDs to component values.
      *
      * @throws ValidationException If $formattedName could not be matched.
      */
-    public static function parseName(string $formattedName, string $template = null): array
+    public static function parseName(string $formattedName, ?string $template = null): array
     {
         return self::parseFormattedName($formattedName, $template);
     }
@@ -282,6 +283,9 @@ public static function parseName(string $formattedName, string $template = null)
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException
diff --git a/NetApp/src/V1/Client/NetAppClient.php b/NetApp/src/V1/Client/NetAppClient.php
index 2bf59158fe01..2b29f0f7b5d6 100644
--- a/NetApp/src/V1/Client/NetAppClient.php
+++ b/NetApp/src/V1/Client/NetAppClient.php
@@ -104,6 +104,7 @@
 use Google\LongRunning\Client\OperationsClient;
 use Google\LongRunning\Operation;
 use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: NetApp Files Google Cloud Service
@@ -508,14 +509,14 @@ public static function volumeName(string $project, string $location, string $vol
      * listed, then parseName will check each of the supported templates, and return
      * the first match.
      *
-     * @param string $formattedName The formatted name string
-     * @param string $template      Optional name of template to match
+     * @param string  $formattedName The formatted name string
+     * @param ?string $template      Optional name of template to match
      *
      * @return array An associative array from name component IDs to component values.
      *
      * @throws ValidationException If $formattedName could not be matched.
      */
-    public static function parseName(string $formattedName, string $template = null): array
+    public static function parseName(string $formattedName, ?string $template = null): array
     {
         return self::parseFormattedName($formattedName, $template);
     }
@@ -570,6 +571,9 @@ public static function parseName(string $formattedName, string $template = null)
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException
diff --git a/NetworkConnectivity/src/V1/Client/HubServiceClient.php b/NetworkConnectivity/src/V1/Client/HubServiceClient.php
index 5a87de51aec1..50b2544b2f55 100644
--- a/NetworkConnectivity/src/V1/Client/HubServiceClient.php
+++ b/NetworkConnectivity/src/V1/Client/HubServiceClient.php
@@ -71,6 +71,7 @@
 use Google\LongRunning\Client\OperationsClient;
 use Google\LongRunning\Operation;
 use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: Network Connectivity Center is a hub-and-spoke abstraction for network
@@ -417,14 +418,14 @@ public static function vpnTunnelName(string $project, string $region, string $re
      * listed, then parseName will check each of the supported templates, and return
      * the first match.
      *
-     * @param string $formattedName The formatted name string
-     * @param string $template      Optional name of template to match
+     * @param string  $formattedName The formatted name string
+     * @param ?string $template      Optional name of template to match
      *
      * @return array An associative array from name component IDs to component values.
      *
      * @throws ValidationException If $formattedName could not be matched.
      */
-    public static function parseName(string $formattedName, string $template = null): array
+    public static function parseName(string $formattedName, ?string $template = null): array
     {
         return self::parseFormattedName($formattedName, $template);
     }
@@ -479,6 +480,9 @@ public static function parseName(string $formattedName, string $template = null)
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException
diff --git a/NetworkConnectivity/src/V1/Client/PolicyBasedRoutingServiceClient.php b/NetworkConnectivity/src/V1/Client/PolicyBasedRoutingServiceClient.php
index daf283d58a53..d611dc064182 100644
--- a/NetworkConnectivity/src/V1/Client/PolicyBasedRoutingServiceClient.php
+++ b/NetworkConnectivity/src/V1/Client/PolicyBasedRoutingServiceClient.php
@@ -50,6 +50,7 @@
 use Google\LongRunning\Client\OperationsClient;
 use Google\LongRunning\Operation;
 use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: Policy-Based Routing allows GCP customers to specify flexibile routing
@@ -237,14 +238,14 @@ public static function policyBasedRouteName(string $project, string $policyBased
      * listed, then parseName will check each of the supported templates, and return
      * the first match.
      *
-     * @param string $formattedName The formatted name string
-     * @param string $template      Optional name of template to match
+     * @param string  $formattedName The formatted name string
+     * @param ?string $template      Optional name of template to match
      *
      * @return array An associative array from name component IDs to component values.
      *
      * @throws ValidationException If $formattedName could not be matched.
      */
-    public static function parseName(string $formattedName, string $template = null): array
+    public static function parseName(string $formattedName, ?string $template = null): array
     {
         return self::parseFormattedName($formattedName, $template);
     }
@@ -299,6 +300,9 @@ public static function parseName(string $formattedName, string $template = null)
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException
diff --git a/NetworkManagement/src/V1/Client/ReachabilityServiceClient.php b/NetworkManagement/src/V1/Client/ReachabilityServiceClient.php
index f1fa700c6cbf..61600dbb2f52 100644
--- a/NetworkManagement/src/V1/Client/ReachabilityServiceClient.php
+++ b/NetworkManagement/src/V1/Client/ReachabilityServiceClient.php
@@ -52,6 +52,7 @@
 use Google\LongRunning\Client\OperationsClient;
 use Google\LongRunning\Operation;
 use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: The Reachability service in the Google Cloud Network Management API provides
@@ -226,14 +227,14 @@ public static function projectName(string $project): string
      * listed, then parseName will check each of the supported templates, and return
      * the first match.
      *
-     * @param string $formattedName The formatted name string
-     * @param string $template      Optional name of template to match
+     * @param string  $formattedName The formatted name string
+     * @param ?string $template      Optional name of template to match
      *
      * @return array An associative array from name component IDs to component values.
      *
      * @throws ValidationException If $formattedName could not be matched.
      */
-    public static function parseName(string $formattedName, string $template = null): array
+    public static function parseName(string $formattedName, ?string $template = null): array
     {
         return self::parseFormattedName($formattedName, $template);
     }
@@ -288,6 +289,9 @@ public static function parseName(string $formattedName, string $template = null)
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException
diff --git a/NetworkSecurity/src/V1/Client/NetworkSecurityClient.php b/NetworkSecurity/src/V1/Client/NetworkSecurityClient.php
index cf85a7e87a41..8f7d5f05e81a 100644
--- a/NetworkSecurity/src/V1/Client/NetworkSecurityClient.php
+++ b/NetworkSecurity/src/V1/Client/NetworkSecurityClient.php
@@ -63,6 +63,7 @@
 use Google\LongRunning\Client\OperationsClient;
 use Google\LongRunning\Operation;
 use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: Network Security API provides resources to configure authentication and
@@ -288,14 +289,14 @@ public static function serverTlsPolicyName(string $project, string $location, st
      * listed, then parseName will check each of the supported templates, and return
      * the first match.
      *
-     * @param string $formattedName The formatted name string
-     * @param string $template      Optional name of template to match
+     * @param string  $formattedName The formatted name string
+     * @param ?string $template      Optional name of template to match
      *
      * @return array An associative array from name component IDs to component values.
      *
      * @throws ValidationException If $formattedName could not be matched.
      */
-    public static function parseName(string $formattedName, string $template = null): array
+    public static function parseName(string $formattedName, ?string $template = null): array
     {
         return self::parseFormattedName($formattedName, $template);
     }
@@ -350,6 +351,9 @@ public static function parseName(string $formattedName, string $template = null)
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException
diff --git a/NetworkServices/src/V1/Client/DepServiceClient.php b/NetworkServices/src/V1/Client/DepServiceClient.php
index bdba8921d50a..5b0d7cca36d2 100644
--- a/NetworkServices/src/V1/Client/DepServiceClient.php
+++ b/NetworkServices/src/V1/Client/DepServiceClient.php
@@ -57,6 +57,7 @@
 use Google\LongRunning\Client\OperationsClient;
 use Google\LongRunning\Operation;
 use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: Service describing handlers for resources.
@@ -252,14 +253,14 @@ public static function locationName(string $project, string $location): string
      * listed, then parseName will check each of the supported templates, and return
      * the first match.
      *
-     * @param string $formattedName The formatted name string
-     * @param string $template      Optional name of template to match
+     * @param string  $formattedName The formatted name string
+     * @param ?string $template      Optional name of template to match
      *
      * @return array An associative array from name component IDs to component values.
      *
      * @throws ValidationException If $formattedName could not be matched.
      */
-    public static function parseName(string $formattedName, string $template = null): array
+    public static function parseName(string $formattedName, ?string $template = null): array
     {
         return self::parseFormattedName($formattedName, $template);
     }
@@ -314,6 +315,9 @@ public static function parseName(string $formattedName, string $template = null)
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException
diff --git a/NetworkServices/src/V1/Client/NetworkServicesClient.php b/NetworkServices/src/V1/Client/NetworkServicesClient.php
index d80619a26a6c..fb2c15ce2b4c 100644
--- a/NetworkServices/src/V1/Client/NetworkServicesClient.php
+++ b/NetworkServices/src/V1/Client/NetworkServicesClient.php
@@ -92,6 +92,7 @@
 use Google\LongRunning\Client\OperationsClient;
 use Google\LongRunning\Operation;
 use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: Service describing handlers for resources.
@@ -519,14 +520,14 @@ public static function tlsRouteName(string $project, string $location, string $t
      * listed, then parseName will check each of the supported templates, and return
      * the first match.
      *
-     * @param string $formattedName The formatted name string
-     * @param string $template      Optional name of template to match
+     * @param string  $formattedName The formatted name string
+     * @param ?string $template      Optional name of template to match
      *
      * @return array An associative array from name component IDs to component values.
      *
      * @throws ValidationException If $formattedName could not be matched.
      */
-    public static function parseName(string $formattedName, string $template = null): array
+    public static function parseName(string $formattedName, ?string $template = null): array
     {
         return self::parseFormattedName($formattedName, $template);
     }
@@ -581,6 +582,9 @@ public static function parseName(string $formattedName, string $template = null)
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException
diff --git a/Notebooks/src/V1/Client/ManagedNotebookServiceClient.php b/Notebooks/src/V1/Client/ManagedNotebookServiceClient.php
index 1e3859121f8d..e7c9406fc25a 100644
--- a/Notebooks/src/V1/Client/ManagedNotebookServiceClient.php
+++ b/Notebooks/src/V1/Client/ManagedNotebookServiceClient.php
@@ -60,6 +60,7 @@
 use Google\LongRunning\Client\OperationsClient;
 use Google\LongRunning\Operation;
 use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: API v1 service for Managed Notebooks.
@@ -238,14 +239,14 @@ public static function runtimeName(string $project, string $location, string $ru
      * listed, then parseName will check each of the supported templates, and return
      * the first match.
      *
-     * @param string $formattedName The formatted name string
-     * @param string $template      Optional name of template to match
+     * @param string  $formattedName The formatted name string
+     * @param ?string $template      Optional name of template to match
      *
      * @return array An associative array from name component IDs to component values.
      *
      * @throws ValidationException If $formattedName could not be matched.
      */
-    public static function parseName(string $formattedName, string $template = null): array
+    public static function parseName(string $formattedName, ?string $template = null): array
     {
         return self::parseFormattedName($formattedName, $template);
     }
@@ -300,6 +301,9 @@ public static function parseName(string $formattedName, string $template = null)
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException
diff --git a/Notebooks/src/V1/Client/NotebookServiceClient.php b/Notebooks/src/V1/Client/NotebookServiceClient.php
index fb1d043a19b6..2f61c14e5b3e 100644
--- a/Notebooks/src/V1/Client/NotebookServiceClient.php
+++ b/Notebooks/src/V1/Client/NotebookServiceClient.php
@@ -86,6 +86,7 @@
 use Google\LongRunning\Client\OperationsClient;
 use Google\LongRunning\Operation;
 use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: API v1 service for Cloud AI Platform Notebooks.
@@ -343,14 +344,14 @@ public static function tensorboardName(string $project, string $location, string
      * listed, then parseName will check each of the supported templates, and return
      * the first match.
      *
-     * @param string $formattedName The formatted name string
-     * @param string $template      Optional name of template to match
+     * @param string  $formattedName The formatted name string
+     * @param ?string $template      Optional name of template to match
      *
      * @return array An associative array from name component IDs to component values.
      *
      * @throws ValidationException If $formattedName could not be matched.
      */
-    public static function parseName(string $formattedName, string $template = null): array
+    public static function parseName(string $formattedName, ?string $template = null): array
     {
         return self::parseFormattedName($formattedName, $template);
     }
@@ -405,6 +406,9 @@ public static function parseName(string $formattedName, string $template = null)
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException
diff --git a/Notebooks/src/V2/Client/NotebookServiceClient.php b/Notebooks/src/V2/Client/NotebookServiceClient.php
index 9290daf0cb05..c8c9d07717ac 100644
--- a/Notebooks/src/V2/Client/NotebookServiceClient.php
+++ b/Notebooks/src/V2/Client/NotebookServiceClient.php
@@ -59,6 +59,7 @@
 use Google\LongRunning\Client\OperationsClient;
 use Google\LongRunning\Operation;
 use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: API v2 service for Workbench Notebooks Instances.
@@ -236,14 +237,14 @@ public static function locationName(string $project, string $location): string
      * listed, then parseName will check each of the supported templates, and return
      * the first match.
      *
-     * @param string $formattedName The formatted name string
-     * @param string $template      Optional name of template to match
+     * @param string  $formattedName The formatted name string
+     * @param ?string $template      Optional name of template to match
      *
      * @return array An associative array from name component IDs to component values.
      *
      * @throws ValidationException If $formattedName could not be matched.
      */
-    public static function parseName(string $formattedName, string $template = null): array
+    public static function parseName(string $formattedName, ?string $template = null): array
     {
         return self::parseFormattedName($formattedName, $template);
     }
@@ -298,6 +299,9 @@ public static function parseName(string $formattedName, string $template = null)
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException
diff --git a/Optimization/src/V1/Client/FleetRoutingClient.php b/Optimization/src/V1/Client/FleetRoutingClient.php
index f82865bd5554..2ed6f5832e79 100644
--- a/Optimization/src/V1/Client/FleetRoutingClient.php
+++ b/Optimization/src/V1/Client/FleetRoutingClient.php
@@ -39,6 +39,7 @@
 use Google\LongRunning\Client\OperationsClient;
 use Google\LongRunning\Operation;
 use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: A service for optimizing vehicle tours.
@@ -212,6 +213,9 @@ private function createOperationsClient(array $options)
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException
diff --git a/OracleDatabase/src/V1/Client/OracleDatabaseClient.php b/OracleDatabase/src/V1/Client/OracleDatabaseClient.php
index ae385a2af8c6..9c474eee3f7b 100644
--- a/OracleDatabase/src/V1/Client/OracleDatabaseClient.php
+++ b/OracleDatabase/src/V1/Client/OracleDatabaseClient.php
@@ -66,6 +66,7 @@
 use Google\LongRunning\Client\OperationsClient;
 use Google\LongRunning\Operation;
 use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: Service describing handlers for resources
@@ -323,14 +324,14 @@ public static function networkName(string $project, string $network): string
      * listed, then parseName will check each of the supported templates, and return
      * the first match.
      *
-     * @param string $formattedName The formatted name string
-     * @param string $template      Optional name of template to match
+     * @param string  $formattedName The formatted name string
+     * @param ?string $template      Optional name of template to match
      *
      * @return array An associative array from name component IDs to component values.
      *
      * @throws ValidationException If $formattedName could not be matched.
      */
-    public static function parseName(string $formattedName, string $template = null): array
+    public static function parseName(string $formattedName, ?string $template = null): array
     {
         return self::parseFormattedName($formattedName, $template);
     }
@@ -382,6 +383,9 @@ public static function parseName(string $formattedName, string $template = null)
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException
diff --git a/OrchestrationAirflow/src/V1/Client/EnvironmentsClient.php b/OrchestrationAirflow/src/V1/Client/EnvironmentsClient.php
index 5b4f6dd4cbb5..b1c99bc61ff0 100644
--- a/OrchestrationAirflow/src/V1/Client/EnvironmentsClient.php
+++ b/OrchestrationAirflow/src/V1/Client/EnvironmentsClient.php
@@ -68,6 +68,7 @@
 use Google\LongRunning\Client\OperationsClient;
 use Google\LongRunning\Operation;
 use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: Managed Apache Airflow Environments.
@@ -286,14 +287,14 @@ public static function userWorkloadsSecretName(
      * listed, then parseName will check each of the supported templates, and return
      * the first match.
      *
-     * @param string $formattedName The formatted name string
-     * @param string $template      Optional name of template to match
+     * @param string  $formattedName The formatted name string
+     * @param ?string $template      Optional name of template to match
      *
      * @return array An associative array from name component IDs to component values.
      *
      * @throws ValidationException If $formattedName could not be matched.
      */
-    public static function parseName(string $formattedName, string $template = null): array
+    public static function parseName(string $formattedName, ?string $template = null): array
     {
         return self::parseFormattedName($formattedName, $template);
     }
@@ -348,6 +349,9 @@ public static function parseName(string $formattedName, string $template = null)
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException
diff --git a/OrchestrationAirflow/src/V1/Client/ImageVersionsClient.php b/OrchestrationAirflow/src/V1/Client/ImageVersionsClient.php
index dbd7cd38f1d7..583d2382b353 100644
--- a/OrchestrationAirflow/src/V1/Client/ImageVersionsClient.php
+++ b/OrchestrationAirflow/src/V1/Client/ImageVersionsClient.php
@@ -34,6 +34,7 @@
 use Google\Auth\FetchAuthTokenInterface;
 use Google\Cloud\Orchestration\Airflow\Service\V1\ListImageVersionsRequest;
 use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: Readonly service to query available ImageVersions.
@@ -138,6 +139,9 @@ private static function getClientDefaults()
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException
diff --git a/OrgPolicy/src/V2/Client/OrgPolicyClient.php b/OrgPolicy/src/V2/Client/OrgPolicyClient.php
index fbbbad583939..c019b10e6e44 100644
--- a/OrgPolicy/src/V2/Client/OrgPolicyClient.php
+++ b/OrgPolicy/src/V2/Client/OrgPolicyClient.php
@@ -48,6 +48,7 @@
 use Google\Cloud\OrgPolicy\V2\UpdateCustomConstraintRequest;
 use Google\Cloud\OrgPolicy\V2\UpdatePolicyRequest;
 use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: An interface for managing organization policies.
@@ -287,14 +288,14 @@ public static function projectPolicyName(string $project, string $policy): strin
      * listed, then parseName will check each of the supported templates, and return
      * the first match.
      *
-     * @param string $formattedName The formatted name string
-     * @param string $template      Optional name of template to match
+     * @param string  $formattedName The formatted name string
+     * @param ?string $template      Optional name of template to match
      *
      * @return array An associative array from name component IDs to component values.
      *
      * @throws ValidationException If $formattedName could not be matched.
      */
-    public static function parseName(string $formattedName, string $template = null): array
+    public static function parseName(string $formattedName, ?string $template = null): array
     {
         return self::parseFormattedName($formattedName, $template);
     }
@@ -349,6 +350,9 @@ public static function parseName(string $formattedName, string $template = null)
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException
diff --git a/OsConfig/src/V1/Client/OsConfigServiceClient.php b/OsConfig/src/V1/Client/OsConfigServiceClient.php
index 9842432e6c67..1e635ce4fec0 100644
--- a/OsConfig/src/V1/Client/OsConfigServiceClient.php
+++ b/OsConfig/src/V1/Client/OsConfigServiceClient.php
@@ -48,6 +48,7 @@
 use Google\Cloud\OsConfig\V1\ResumePatchDeploymentRequest;
 use Google\Cloud\OsConfig\V1\UpdatePatchDeploymentRequest;
 use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: OS Config API
@@ -185,14 +186,14 @@ public static function projectName(string $project): string
      * listed, then parseName will check each of the supported templates, and return
      * the first match.
      *
-     * @param string $formattedName The formatted name string
-     * @param string $template      Optional name of template to match
+     * @param string  $formattedName The formatted name string
+     * @param ?string $template      Optional name of template to match
      *
      * @return array An associative array from name component IDs to component values.
      *
      * @throws ValidationException If $formattedName could not be matched.
      */
-    public static function parseName(string $formattedName, string $template = null): array
+    public static function parseName(string $formattedName, ?string $template = null): array
     {
         return self::parseFormattedName($formattedName, $template);
     }
@@ -247,6 +248,9 @@ public static function parseName(string $formattedName, string $template = null)
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException
diff --git a/OsConfig/src/V1/Client/OsConfigZonalServiceClient.php b/OsConfig/src/V1/Client/OsConfigZonalServiceClient.php
index d2b6fe9aa965..267fdd6fbb77 100644
--- a/OsConfig/src/V1/Client/OsConfigZonalServiceClient.php
+++ b/OsConfig/src/V1/Client/OsConfigZonalServiceClient.php
@@ -53,6 +53,7 @@
 use Google\LongRunning\Client\OperationsClient;
 use Google\LongRunning\Operation;
 use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: Zonal OS Config API
@@ -380,14 +381,14 @@ public static function vulnerabilityReportName(string $project, string $location
      * listed, then parseName will check each of the supported templates, and return
      * the first match.
      *
-     * @param string $formattedName The formatted name string
-     * @param string $template      Optional name of template to match
+     * @param string  $formattedName The formatted name string
+     * @param ?string $template      Optional name of template to match
      *
      * @return array An associative array from name component IDs to component values.
      *
      * @throws ValidationException If $formattedName could not be matched.
      */
-    public static function parseName(string $formattedName, string $template = null): array
+    public static function parseName(string $formattedName, ?string $template = null): array
     {
         return self::parseFormattedName($formattedName, $template);
     }
@@ -442,6 +443,9 @@ public static function parseName(string $formattedName, string $template = null)
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException
diff --git a/OsLogin/src/V1/Client/OsLoginServiceClient.php b/OsLogin/src/V1/Client/OsLoginServiceClient.php
index 5d15d64d451a..861d52378921 100644
--- a/OsLogin/src/V1/Client/OsLoginServiceClient.php
+++ b/OsLogin/src/V1/Client/OsLoginServiceClient.php
@@ -43,6 +43,7 @@
 use Google\Cloud\OsLogin\V1\LoginProfile;
 use Google\Cloud\OsLogin\V1\UpdateSshPublicKeyRequest;
 use GuzzleHttp\Promise\PromiseInterface;
+use Psr\Log\LoggerInterface;
 
 /**
  * Service Description: Cloud OS Login API
@@ -180,14 +181,14 @@ public static function userName(string $user): string
      * listed, then parseName will check each of the supported templates, and return
      * the first match.
      *
-     * @param string $formattedName The formatted name string
-     * @param string $template      Optional name of template to match
+     * @param string  $formattedName The formatted name string
+     * @param ?string $template      Optional name of template to match
      *
      * @return array An associative array from name component IDs to component values.
      *
      * @throws ValidationException If $formattedName could not be matched.
      */
-    public static function parseName(string $formattedName, string $template = null): array
+    public static function parseName(string $formattedName, ?string $template = null): array
     {
         return self::parseFormattedName($formattedName, $template);
     }
@@ -242,6 +243,9 @@ public static function parseName(string $formattedName, string $template = null)
      *     @type callable $clientCertSource
      *           A callable which returns the client cert as a string. This can be used to
      *           provide a certificate and private key to the transport layer for mTLS.
+     *     @type false|LoggerInterface $logger
+     *           A PSR-3 compliant logger. If set to false, logging is disabled, ignoring the
+     *           'GOOGLE_SDK_PHP_LOGGING' environment flag
      * }
      *
      * @throws ValidationException