Add Custom requests section to README (#1405)

README.md

@@ -264,6 +264,20 @@ If your beta feature requires a `Stripe-Version` header to be sent, set the `str
 stripe.add_beta_version("feature_beta", "v3")
 ```
 
+### Custom requests
+
+If you would like to send a request to an undocumented API (for example you are in a private beta), or if you prefer to bypass the method definitions in the library and specify your request details directly, you can use the `raw_request` method on `StripeClient`.
+
+```python
+client = StripeClient("sk_test_...")
+response = client.raw_request(
+    "post", "/v1/beta_endpoint", param=123, stripe_version="2022-11-15; feature_beta=v3"
+)
+
+# (Optional) response is a StripeResponse. You can use `client.deserialize` to get a StripeObject.
+deserialized_resp = client.deserialize(response, api_mode='V1')
+```
+
 ### Async
 
 Asynchronous versions of request-making methods are available by suffixing the method name

examples/raw_request.py

@@ -0,0 +1,15 @@
+from stripe import StripeClient
+
+# Set your API key here
+api_key = "{{API_KEY}}"
+
+client = StripeClient(api_key)
+response = client.raw_request(
+    "post",
+    "/v1/beta_endpoint",
+    param=123,
+    stripe_version="2022-11-15; feature_beta=v3",
+)
+
+# (Optional) response is a StripeResponse. You can use `client.deserialize` to get a StripeObject.
+deserialized_resp = client.deserialize(response, api_mode="V1")