class_docstr: Context that providing API that can be
  used inside `tile` and `execute`.
docstr: Set key of running operand.
  
  Parameters
  ----------
  session_id : str
  op_key : str
docstr_tok: ["Set","key","of","running","operand",".","Parameters","--","--","--","--","--","session_id",":","str","op_key",":","str"]
code: def set_running_operand_key(self, session_id: str, op_key: str):
      """
      Set key of running operand.
  
      Parameters
      ----------
      session_id : str
      op_key : str
      """
  
imports: import os
  from abc import ABC, abstractmethod
  from typing import List, Dict
  from ..typing import BandType, SessionType
  from ..storage.base import StorageLevel
  from ..utils import classproperty
label_desc: Use image node_id 17 for calling the Context obj's underlying member method code with example usage: obj.set_running_operand_key(session_id, op_key) without return types