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