code: def _add_methods(cls, new_methods) -> None:
      for name, method in new_methods.items():
          setattr(cls, name, method)
  
imports: from __future__ import annotations
  import operator
  from pandas.core.dtypes.generic import ABCDataFrame, ABCSeries
  from pandas.core.ops import roperator
label_desc: Use image node_id 4 for calling a global function with example usage: _add_methods(cls, new_methods) without return types