class MessagesViewController: MSMessagesAppViewController, SendMessage {

// MARK: - Delegates
    func didSendDraw(on image: UIImage) {
        self.composeMessage(image: image)
        requestPresentationStyle(.compact)
    }

    // MARK: - Create Message
    func composeMessage(image: UIImage) {
        let conversation = self.conversation

        let layout = MSMessageTemplateLayout()
        layout.image = image
        layout.caption = "Etch a Message"

        let message = MSMessage()
        message.layout = layout

        conversation?.insert(message, completionHandler: nil)
    }
}