add utility functions for base model classes

src/main/java/info/movito/themoviedbapi/util/ModelUtil.java

@@ -0,0 +1,37 @@
+package info.movito.themoviedbapi.util;
+
+import java.util.Collection;
+import java.util.List;
+
+import info.movito.themoviedbapi.model.core.NamedIdElement;
+import info.movito.themoviedbapi.model.core.NamedStringIdElement;
+
+/**
+ * TMDB API Model Utility.
+ */
+public final class ModelUtil {
+    private ModelUtil() {
+    }
+
+    /**
+     * Gets a list of names (from the name field) from the items in the collection provided.
+     * For model classes extending {@link NamedIdElement}.
+     *
+     * @param collection the collection.
+     * @return the list of names.
+     */
+    public static List<String> getNames(Collection<? extends NamedIdElement> collection) {
+        return collection.stream().map(NamedIdElement::getName).toList();
+    }
+
+    /**
+     * Gets a list of names (from the name field) from the items in the collection provided.
+     * For model classes extending {@link NamedStringIdElement}.
+     *
+     * @param collection the collection.
+     * @return the list of names.
+     */
+    public static List<String> getNamesString(Collection<? extends NamedStringIdElement> collection) {
+        return collection.stream().map(NamedStringIdElement::getName).toList();
+    }
+}

src/main/java/module-info.java

@@ -82,4 +82,5 @@
     exports info.movito.themoviedbapi.tools.builders.discover;
     exports info.movito.themoviedbapi.tools.sortby;
     exports info.movito.themoviedbapi.tools.model.time;
+    exports info.movito.themoviedbapi.util;
 }