docstr: A proxy-call to the dataframe's `.applymap()`.
code: def applymap(self, func):
      """
      A proxy-call to the dataframe's `.applymap()`.
      """
      return self.dataframe.applymap(func=func)
  
imports: from abc import ABC
label_desc: Use image node_id 18 for calling the DataframeAbstract obj's underlying member method code with example usage: obj.applymap(func) and returns: self