docs: def get_genus_type_metadata(self):
          """Gets the metadata for a genus type.
  
          return: (osid.Metadata) - metadata for the genus
          *compliance: mandatory -- This method must be implemented.*
  
          """
          metadata = dict(self._mdata['genus_type'])
          metadata.update({'existing_string_values': self._my_map['genusTypeId']})
          return Metadata(**metadata)