docs: def required_params(data, *r_params):
      """Check if given parameters are in the given dict, if not raise an
      exception.
  
      :param data: data to check
      :type data: dict
      :param r_params: required parameters
      :raises RequestException: if params not in data
      """
  
      if not reduce(lambda still_valid, param: still_valid and param in data,
                    r_params, True):
          raise RequestException(msg_err_missing_params(*r_params))