code: def _format_value(self, value):
          
          if len(value) > 0:
              if value[0] == ".":
                  value = self.package + value
              else:
                  v_dot = value.find(".")
                  if v_dot == 0:
                      value = self.package + "." + value
                  elif v_dot == -1:
                      value = self.package + "." + value
          return value
docs: Format a value with packagename, if not already set
  
          :param value:
          :return: