code: def __instancecheck__(self, obj):
      return (
          isinstance(obj, _base._AxesBase)
          and obj.get_subplotspec() is not None
      )
  
file_path: catboost/contrib/python/matplotlib/py3/matplotlib/axes/__init__.py
imports: from .None import _base
  from ._axes import *
  from ._axes import Axes
label_desc: Use image node_id 1 for calling the _SubplotBaseMeta obj's underlying member method code with example usage: obj.__instancecheck__(obj) and returns: unknown