def stop_task(cls, task_tag, stop_dependent=True, stop_requirements=False):
		""" Stop started task from registry

		:param task_tag: same as in :meth:`.WTaskDependencyRegistryStorage.stop_task` method
		:param stop_dependent: same as in :meth:`.WTaskDependencyRegistryStorage.stop_task` method
		:param stop_requirements: same as in :meth:`.WTaskDependencyRegistryStorage.stop_task` method
		:return: None
		"""
		registry = cls.registry_storage()
		registry.stop_task(task_tag, stop_dependent=stop_dependent, stop_requirements=stop_requirements)