code: def create_missing_types(cls, schema, type_dict, type_builder=None):
          
          if not type_builder:
              type_builder = cls.type_builder
  
          missing = cls.extract_missing_special_type_names(schema, type_dict)
          return type_builder.create_type_variants(missing, type_dict)
docs: Creates missing types for fields with a CardinalityField part.
          It is assumed that the primary type converter for cardinality=1
          is registered in the type dictionary.
  
          :param schema:  Parse schema (or format) for parser (as string).
          :param type_dict:  Type dictionary with type converters.
          :param type_builder: Type builder to use for missing types.
          :return: Type dictionary with missing types. Empty, if none.
          :raises: MissingTypeError,
                  if a primary type converter with cardinality=1 is missing.