code: def create(obj: PersistedObject, obj_type: Type[T], errors: Dict[Type, Exception]):
          
  
          e = NoParserFoundForUnionType('{obj} cannot be parsed as a {typ} because no parser could be found for any of '
                                        'the alternate types. Caught exceptions: {errs}'
                                        ''.format(obj=obj, typ=get_pretty_type_str(obj_type), errs=errors))
  
          # save the errors
          e.errors = errors
  
          return e
docs: Helper method provided because we actually can't put that in the constructor, it creates a bug in Nose tests
          https://github.com/nose-devs/nose/issues/725
  
          :param obj:
          :param errors: a dictionary of the errors raised for each alternate type tried
          :return: