code: def _get_environs(self, prefix: str = None) -> dict:
          
          if not prefix:
              log.debug("using default environ prefix")
              prefix = DEFAULT_ENVIRON_PREFIX
          return dict_from_environs(prefix, self.name, list(self.arguments.keys()))
docs: Fetches set environment variables if such exist, via the :func:`~notifiers.utils.helpers.dict_from_environs`
          Searches for `[PREFIX_NAME]_[PROVIDER_NAME]_[ARGUMENT]` for each of the arguments defined in the schema
  
          :param prefix: The environ prefix to use. If not supplied, uses the default
          :return: A dict of arguments and value retrieved from environs