code: function pickQueryParams(obj) {
    return [
      'where',
      'orderBy',
      'limit',
      'startAfter',
      'startAt',
      'endAt',
      'endBefore',
    ].reduce((acc, key) => (obj[key] ? { ...acc, [key]: obj[key] } : acc), {});
  }
docs: Pcik query params from object
  @param {Object} obj - Object from which to pick query params
  @return {Object}