}

    private <T> EventBroadcast<T> getBroadcasterInternal(Class<T> listenerClass) {
        synchronized (lock) {
            EventBroadcast<T> broadcaster = Cast.uncheckedCast(broadcasters.get(listenerClass));
            if (broadcaster == null) {
                broadcaster = new EventBroadcast<T>(listenerClass);
                broadcasters.put(listenerClass, broadcaster);

Class <org.gradle.internal.event.DefaultListenerManager$EventBroadcast$ListenerDispatch> is not annotated (directly or via its package) with @org.gradle.api.NonNullApi in (DefaultListenerManager.java:0)