code: public TextMessageBuilder addQuickReply(QuickReply reply) {
  		if (this.quickReplies == null) {
  			this.quickReplies = new ArrayList<QuickReply>();
  		}
  		this.quickReplies.add(reply);
  		return this;
  	}
docs: Adds a {@link QuickReply} to the current object.
  
  @param reply
  a quick reply object.
  @return this builder.
  @see <a href=
  "https://developers.facebook.com/docs/messenger-platform/send-api-reference/quick-replies"
  > Facebook's Messenger Platform Quick Replies Documentation</a>