class_docstr: Context that providing API that can be
  used inside `tile` and `execute`.
code: def __enter__(self):
      Context.all_contexts.append(self)
  
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 19 for calling the Context obj's underlying member method code with example usage: obj.__enter__() without return types