public UpdateAnnotationsOnDestroyElementCommand( DestroyElementRequest request, IGraphicalEditPart parentTreeNodeEditPart) { super(request.getEditingDomain(), request.getLabel(), null); Assert.isNotNull(request, "request is null."); Assert.isNotNull(parentTreeNodeEditPart, "parentTreeNodeEditPart is null."); this.request = request; this.parentTreeNodeEditPart = parentTreeNodeEditPart; }