and:
        decorator.decorate('foo', BuildListener, buildListener) is buildListener
        decorator.decorateUnknownListener('foo', buildListener) is buildListener

        and:
        decorator.decorate('foo', ProjectEvaluationListener, projectEvaluationListener) is projectEvaluationListener
        decorator.decorateUnknownListener('foo', projectEvaluationListener) is projectEvaluationListener

        and:

        return closure
    }

    @Override
    <T> T decorate(String registrationPoint, Class<T> cls, T listener) {
        listener
    }

    @Override
    Object decorateUnknownListener(String registrationPoint, Object listener) {
        listener
    }

        return getListenerManager().getBroadcaster(BuildScopeListenerRegistrationListener.class);
    }

    private Object decorateUnknownListener(String registrationPoint, Object listener) {
        return getListenerBuildOperationDecorator().decorateUnknownListener(registrationPoint, listener);
    }

    private Closure<?> decorate(String registrationPoint, Closure closure) {

     * @param listener the listener object to decorate
     * @see #decorate(String, Class, Object)
     */
    Object decorateUnknownListener(String registrationPoint, Object listener);

        return targetClass.cast(Proxy.newProxyInstance(listenerClass.getClassLoader(), allInterfaces.toArray(new Class[0]), handler));
    }

    @Override
    public Object decorateUnknownListener(String registrationPoint, Object listener) {
        return decorate(registrationPoint, Object.class, listener);
    }

    private static boolean isSupported(Object listener) {