code: def full_data(self):
          
          data = [
              self.full_name,
              self._username(),
              self._id(),
              self._language_code(),
              self._is_bot()
          ]
          return " ".join(filter(None, data))
docs: Returns all the info available for the user in the following format:
              name [username] <id> (locale) bot_or_user
          If any data is not available, it is not added.