code: def register_parser(self, type, parser, **meta):
          
          try:
              self.registered_formats[type]['parser'] = parser
          except KeyError:
              self.registered_formats[type] = {'parser': parser}
          if meta:
              self.register_meta(type, **meta)
docs: Registers a parser of a format.
  
          :param type: The unique name of the format
          :param parser: The method to parse data as the format
          :param meta: The extra information associated with the format