code: def get_medium_ids_for_password_id(self, password_id):
          
          if not isinstance(password_id, basestring):
              raise TypeError("password_id can only be an instance of type basestring")
          identifiers = self._call("getMediumIdsForPasswordId",
                       in_p=[password_id])
          return identifiers
docs: Returns a list of medium identifiers which use the given password identifier.
  
          in password_id of type str
              The password identifier to get the medium identifiers for.
  
          return identifiers of type str
              The list of medium identifiers returned on success.