CTasksRarelyTools::onBeforeUserTypeUpdate

static function onBeforeUserTypeUpdate()
{
	/** @var $CACHE_MANAGER CCacheManager */
	global $CACHE_MANAGER;

	// We can't determine here, is tasks' user field updated or not.
	// So clear cache in any case
	$CACHE_MANAGER->ClearByTag('tasks_user_fields');
}