code: def __hash__(self) -> int:
      if self._hash is None:
          self._hash = self._calc_hash()
      return self._hash
  
file_path: aim/aim/sdk/base_run.py
imports: import logging
  from typing import Dict, Optional, Union
  from typing import TYPE_CHECKING
  import pathlib
  from aim.storage.hashing import hash_auto
  from aim.storage.treeview import TreeView
  from aim.sdk.utils import generate_run_hash
  from aim.sdk.repo_utils import get_repo
  from aim.sdk.errors import MissingRunError
  from aim.sdk.tracker import STEP_HASH_FUNCTIONS
label_desc: Use image node_id 3 for calling the BaseRun obj's underlying member method code with example usage: obj.__hash__() and returns: self