code: def rename_columns(self, mapping: Dict[str, str]) -> "Column":
      self.name = self._unhash(mapping.get(self.name) or self.name)
      return self
  
imports: import hashlib
  import itertools
  from typing import Dict, List, Optional, Tuple, Union
  import numpy
  import pandas
  from pandas._typing import DtypeObj
  from upgini.autofe.all_operands import find_op
  from upgini.autofe.operand import Operand, PandasOperand
label_desc: Use image node_id 2 for calling the Column obj's underlying member method code with example usage: obj.rename_columns(mapping) and returns: self