code: function sendQuickReplies (recipient, quick_replies, text) {  
    return new Promise (async (resolve, reject) => {
      if (!quick_replies || !Array.isArray(quick_replies)) {
        reject('quick_replies array required');    
      }
  
      let payload = {
        'quick_replies': quick_replies
      };
  
      if (text) payload.text = text;
  
      try {
        let response = await this.callSendApi(recipient, payload);  
        resolve(response);
      } catch (e) {
        reject(e);
      }
    });
  }
docs: Sends a set of quick reply buttons  via the [Send API](https://developers.facebook.com/docs/messenger-platform/reference/send-api).
  @param  {Object}  recipient  An object that describes the message recipient in the format: `{<id_type>: <id>}`.
  For example, sends to a PSID would be `{'id': 123456}`, to a phone number `{'phone_number': '+1 (408) 444-4444'}.
  @param  {Object}  quick_replies  An object that describes the quick replies to send. This is the `message.quick_replies` property that would normally be included in a Send API request.
  @param  {String}  text   _Optional._ Text message to send with quick replies.
  @return {Promise<Object>}  The API response
  @memberof  Client#
  @example <caption>Generic Template</caption>
  let recipient = {'id': '57024957309673'};
  let quick_replies = [
  {
  'content_type':'text',
  'title':'Quick Reply 1',
  'image_url':'https://www.example.com/icon.png',
  'payload':'quick_reply_payload'
  },
  {
  'content_type':'location'
  }
  ];
  let text = 'Text message to send with the quick replies'; //optional
  Client.sendQuickReplies(recipient, quick_replies, text)
  .then(res => {
  console.log(res);
  // {
  //   "recipient_id": "1008372609250235",
  //   "message_id": "mid.1456970487936:c34767dfe57ee6e339"
  // }
  });