code: def parse(self, native):
          
          if not hasattr(self, 'parser') or not self.parser:
              raise NotImplementedError('Parser class not specified')
          parser = self.parser(native)
          self.intermediate_data = parser.intermediate_data
          del parser
          self.to_netjson()
docs: Parses a native configuration and converts
          it to a NetJSON configuration dictionary