is::checkAccessThrowException

static function checkAccessThrowException(CTaskItem $task)
{
	if(!$task->isActionAllowed(CTaskItem::ACTION_CHANGE_DEADLINE))
	{
		throw new BitrixTasksActionNotAllowedException(false, array(
			'AUX' => array(
				'MESSAGE' => array('TASK_ID' => $task->getId())
			)
		));
	}
}