code: def _get_api_params(api_url=None,
                      api_version=None,
                      api_key=None):
      '''
      Retrieve the API params from the config file.
      '''
      mandrill_cfg = __salt__['config.merge']('mandrill')
      if not mandrill_cfg:
          mandrill_cfg = {}
      return {
          'api_url': api_url or mandrill_cfg.get('api_url') or BASE_URL,  # optional
          'api_key': api_key or mandrill_cfg.get('key'),  # mandatory
          'api_version': api_version or mandrill_cfg.get('api_version') or DEFAULT_VERSION
      f _get_api_params(api_url=None,
                      api_version=None,
                      api_key=None):
      '''
      Retrieve the API params from the config file.
      '''
      mandrill_cfg = __salt__['config.merge']('mandrill')
      if not mandrill_cfg:
          mandrill_cfg = {}
      return {
          'api_url': api_url or mandrill_cfg.get('api_url') or BASE_URL,  # optional
          'api_key': api_key or mandrill_cfg.get('key'),  # mandatory
          'api_version': api_version or mandrill_cfg.get('api_version') or DEFAULT_VERSION
      }
docs: Retrieve the API params from the config file.