docs: 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);
      }
    });
  }