protected void setTarget(@Nullable RadComponent target, @Nullable ContainerTargetFilter filter) {
    if (target != myTarget) {
      if (myTargetOperation != null) {
        eraseFeedback();
      }

      myTarget = target;
      myTargetOperation = filter == null ? null : filter.getOperation();
    }
  }
protected void setTarget(@Nullable RadComponent target, @Nullable ContainerTargetFilter filter)