protected Command getDestroyElementCommand(DestroyElementRequest req) {
	DestroyElementCommand cmd = new DestroyElementCommand(req) {
		@Override
		protected CommandResult doExecuteWithResult(IProgressMonitor monitor, IAdaptable info) throws ExecutionException {
			Shell shell = new Shell(SWT.DIALOG_TRIM | SWT.PRIMARY_MODAL);
			boolean result = MessageDialog.openQuestion(shell, Messages.StateTransitionDeleteQuestionTitle, Messages.StateTransitionDeleteQuestion);

			if (result) {
				// OK Button selected
				return super.doExecuteWithResult(monitor, info);
			} else {
				// Cancel Button selected
				return CommandResult.newCancelledCommandResult();
			}
		}
	};
	return getGEFWrapper(cmd);
}