if (extensionsStorage.hasExtension(name)) {
            throw new IllegalArgumentException(
                format("There's an extension registered with name '%s'. You should not reassign it via a property setter.", name));
        }
    }

    private boolean isConfigureExtensionMethod(String name, @Nullable Object[] args) {
        return args.length == 1 &&

    if (isWindows()) {
      return; // TODO: b/136041958 - Running very slowly on Windows CI.
    }
    final CyclicBarrier barrier =
        new CyclicBarrier(
            6 // for the setter threads
                + 50 // for the listeners
                + 50 // for the blocking get threads,
                + 1); // for the main thread

                        backingField?.findAnnotationTypeRef(annotationEntry)
                            ?: getter?.findAnnotationTypeRef(annotationEntry)
                            ?: setter?.findAnnotationTypeRef(annotationEntry)
                    }
                } else null
            }
            else -> null
        }
    }

[[sec:declaring_task_option]]
=== Step 1. Declare a command-line option

To expose a new command line option for a task property, annotate the corresponding setter method of a property with link:{javadocPath}/org/gradle/api/tasks/options/Option.html[Option]:

```
@Option(option = "flag", description = "Sets the flag")
```

An option requires a mandatory identifier.

    session.jvmTypeMapper.mapType(this, mode, signatureWriter) {
        val containingFile = useSitePosition.containingKtFile
        // parameters for default setters does not have kotlin origin, but setter has
            ?: (useSitePosition as? KtLightParameter)?.parent?.parent?.containingKtFile
            ?: return@mapType null
        val correspondingImport = containingFile.findImportByAlias(it) ?: return@mapType null

			Controller:         references[i].Controller,
			BlockOwnerDeletion: references[i].BlockOwnerDeletion,
		})
	}
	if len(references) == 0 {
		// This is necessary for the test to pass because the setter will make a
		// non-nil slice.
		myAPIObject2.ObjectMeta.OwnerReferences = make([]metav1.OwnerReference, 0)
	}
	return myAPIObject2, metaOwnerReferences
}

func testGetOwnerReferences(t *testing.T) {

import org.gradle.model.Managed

@Managed
interface Managed${typeName} {
    ${typeName} get${typeName}()`
    void set${typeName}($typeName arg)
}
""")
    }

    def "must have a setter - #managedType.simpleName"() {
        expect:

        then:
        obj.thing == 12
        obj.getThing() == 12
        obj.getProperty("thing") == 12
    }

    def "can optionally set injected service using a service setter method"() {
        given:
        def services = defaultServices()

        when:
        def obj = create(BeanWithMutableServices, services)
        obj.thing = 12

        then:

            return newValueParameter.orElseThrow(() -> new IllegalArgumentException("a setter interceptor must accept a parameter")).getParameterType();
        } else {
            throw new IllegalArgumentException("expected a property interception request, got " + request);
        }
    }

     *     <li>{@code addJvmArguments(...)} and {@code setJvmArguments(...)}</li>
     *     <li>build scripts</li>
     * </ul>
     * <p>
     * Note: this method has "setter" behavior, so the last invocation will overwrite previously set values.
     *
     * @param systemProperties the system properties add to the Gradle process. Passing {@code null} resets to the default behavior.