code: def __subclasscheck__(cls, subcls):
      return deep_issubclass(subcls, cls.__args__[0])
  
imports: import functools
  import sys
  import typing
  import weakref
  import typing_extensions
  from multipledispatch.variadic import Variadic
  from multipledispatch.variadic import isvariadic
label_desc: Use image node_id 2 for calling the _RuntimeSubclassCheckMeta obj's underlying member method code with example usage: obj.__subclasscheck__(cls, subcls) and returns: deep_issubclass