Refactoring: Use lombok for simple getters & setters (#18559)

* Add missing @Override annotation

* Fix JavaDoc unresolved symbol

* Fix JavaDoc method link

* Remove unnecessary semicolon

* Remove method identical to super implementations

* Replace repetitive getter code with Lombok @Getter

See https://projectlombok.org/features/GetterSetter

* Replace repetitive setter code with Lombok @Setter

See https://projectlombok.org/features/GetterSetter

* Generate no-args constructor with Lombok

* Generate all-args constructor with Lombok

* Fix parameter naming

* Replace stubbed abstract class implementations with Mockito mocks

* Remove unused import(s)

modules/openapi-generator-core/src/main/java/org/openapitools/codegen/meta/features/DocumentationFeature.java

@@ -38,5 +38,5 @@ public enum DocumentationFeature {
      * Generated output includes documentation for all generated APIs.
      */
     @ToolingExtension
-    Api;
+    Api
 }