e.message == "Cannot add extension with name 'foo', as there is an extension already registered with that name."

        when:
        container.foo = 'other'

        then:
        IllegalArgumentException e2 = thrown()
        e2.message == "There's an extension registered with name 'foo'. You should not reassign it via a property setter."

        when:

     * </pre>
     *
     * @param name The name of the property to check for
     * @return {@code true} if a property has been registered with this name, otherwise {@code false}.
     */
    boolean has(String name);

    /**
     * Returns the value for the registered property with the given name.
     *
     * When using an extra properties extension from Groovy, you can also get properties via Groovy's property syntax.

        when:
        buildFile << """
            notifier.notify {
                println "failure is null: \${it.failure == null}"
            }
            // user logic registered _after_ listener registered
            gradle.projectsEvaluated {
                println "projects evaluated"
            }
        """

        run()

        then:
        output.contains("projects evaluated")

	// 10
	// 15
}

// interfaceEncode encodes the interface value into the encoder.
func interfaceEncode(enc *gob.Encoder, p Pythagoras) {
	// The encode will fail unless the concrete type has been
	// registered. We registered it in the calling function.

	// Pass pointer to interface so Encode sees (and hence sends) a value of
	// interface type. If we passed p directly it would see the concrete type instead.

    class Base {
        String value
    }

    class TestType extends Base {}

    class AnotherTestType extends Base {}

    def "trying to create an entity for which there is no factory registered results in an exception"() {
        given:
        instantiator.registerFactory(TestType, {})

        when:
        instantiator.create("foo", Integer)

        then:

//   tf__concat_v2 => tf.ConcatV2
std::string GetTFOpName(StringRef compose_func_name);

// Validate the attributes of 'src' is either contained in the registered
// attribute sets or in the allowed list.
LogicalResult ValidateAttrs(Operation* src, const StringSet<>& registered);

// Copies all the allowed attributes in 'src' to 'dst'. The copy failed if the
// 'dst' has the attribute. Return a failure if there are any attributes are not

   */
  public void register(Object object) {
    subscribers.register(object);
  }

  /**
   * Unregisters all subscriber methods on a registered {@code object}.
   *
   * @param object object whose subscriber methods should be unregistered.
   * @throws IllegalArgumentException if the object was not previously registered.
   */

        this.strict = false;
        return this;
    }

    /**
     * Providing a scope makes the resulting {@link ServiceRegistry}
     * validate all registered services for being annotated with the given scope.
     * <p>
     * All registered services require the {@link org.gradle.internal.service.scopes.ServiceScope @ServiceScope}
     * annotation to be present and contain the given scope.
     *
     * @see #scope(Class)

        )
    }

    private
    fun withPluginSourceFile(fileName: String, text: String) {
        withFile("plugins/src/main/kotlin/$fileName", text)
    }

    @Test
    fun `can access extension registered by included build plugin`() {
        // when:
        val result = build("ok")

        // then:
        result.assertOutputContains("It's 42!")

        // when: plugin changes in an incompatible way

namespace tensorflow {
// Broadcast `auto_clustering_activity` to all the registered listeners.
Status BroadcastXlaActivity(XlaAutoClusteringActivity auto_clustering_activity);

// Broadcast `jit_compilation_activity` to all the registered listeners.
Status BroadcastXlaActivity(XlaJitCompilationActivity jit_compilation_activity);

// Broadcast `jit_compilation_activity` to all the registered listeners.