code: def _create_symbol(self, id, symbolobj):
          
          result = {'id': symbolobj.name, 'isPoint': False, 'isStroke': False, 'isFill': False}
          matcher = Mapfile._SYMBOL_NAME_REGEXP.match(symbolobj.name)
          if matcher:
              result['name'] = matcher.group(2)
              for c in matcher.group(1):
                  field = Mapfile._STYLE_CHAR2NAME[c]
                  result[field] = True
          else:
              result['name'] = symbolobj.name
              result['isPoint'] = result['isStroke'] = result['isFill'] = True
          return result
docs: Creates the JSON representation of a symbol