docstr: A proxy-call to the dataframe's `.pivot()`.
code: def pivot(self, index, columns, values):
      """
      A proxy-call to the dataframe's `.pivot()`.
      """
      return self.dataframe.pivot(
          index=index, columns=columns, values=values
      )
  
imports: from abc import ABC
label_desc: Use image node_id 21 for calling the DataframeAbstract obj's underlying member method code with example usage: obj.pivot(index, columns, values) and returns: self