savePreparedInlineMessage(userId, result, form = {}) {
    form.user_id = userId;
    form.result = stringify(result);
    return this._request('savePreparedInlineMessage', { form });
  }
Use this method to stores a message that can be sent by a user of a Mini App.

@param {Number} userId Unique identifier of the target user
@param {InlineQueryResult} result object that represents one result of an inline query
@param {Object} [options] Optional form data to include in the request
@return {Promise} On success, returns a [PreparedInlineMessage](https://core.telegram.org/bots/api#preparedinlinemessage) object.
@see https://core.telegram.org/bots/api#savepreparedinlinemessage