Start task from registry

		:param task_tag: same as in :meth:`.WTaskDependencyRegistryStorage.start_task` method
		:param skip_unresolved: same as in :meth:`.WTaskDependencyRegistryStorage.start_task` method
		:return: None

def start_task(cls, task_tag, skip_unresolved=False):
		""" Start task from registry

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