docstr: The hash of this Payload uniquely identifies the payload and the associated origin Work.
  
  Returns ``None`` if the origin is not defined, i.e., this Path did not yet get attached to a LightningWork.
docstr_tok: ["The","hash","of","this","Payload","uniquely","identifies","the","payload","and","the","associated","origin","Work",".","Returns","``","None","``","if","the","origin","is","not","defined",",","i.e.",",","this","Path","did","not","yet","get","attached","to","a","LightningWork","."]
code: def hash(self) -> Optional[str]:
      """The hash of this Payload uniquely identifies the payload and the associated origin Work.
  
      Returns ``None`` if the origin is not defined, i.e., this Path did not yet get attached to a LightningWork.
  
      """
      if self._origin is None:
          return None
      contents = f"{self.origin_name}/{self.consumer_name}/{self.name}"
      return hashlib.sha1(contents.encode("utf-8")).hexdigest()
  
imports: import hashlib
  import pathlib
  import pickle
  from abc import ABC, abstractmethod
  from time import sleep
  from typing import TYPE_CHECKING, Any, Optional, Union
  from lightning.app.core.constants import REMOTE_STORAGE_WAIT
  from lightning.app.core.queues import BaseQueue
  from lightning.app.storage.path import Path, _filesystem, _shared_storage_path
  from lightning.app.storage.requests import _ExistsRequest, _ExistsResponse, _GetRequest, _GetResponse
  from lightning.app.utilities.app_helpers import Logger
  from lightning.app.utilities.component import _is_flow_context
label_desc: Use image node_id 4 for calling the _BasePayload obj's underlying member method code with example usage: obj.hash() and returns: hashlib, None