public CompletableFuture<Void> callbackOnPrepareClassesAsync(ClassPrepareRequestor requestor, SourcePosition classPosition) {
    return callbackOnPrepareClasses(requestor, classPosition, getEventRequestEnabler(false));
  }
public CompletableFuture<Void> callbackOnPrepareClassesAsync(ClassPrepareRequestor requestor, SourcePosition classPosition)