code: def extract_missing_special_type_names(schema, type_dict):
          
          for name in FieldParser.extract_types(schema):
              if CardinalityField.matches_type(name) and (name not in type_dict):
                      yield name
docs: Extract the type names for fields with CardinalityField part.
          Selects only the missing type names that are not in the type dictionary.
  
          :param schema:     Parse schema to use (as string).
          :param type_dict:  Type dictionary with type converters.
          :return: Generator with missing type names (as string).