title: Share link in private message on fb-messenger:// url scheme from web JS function
body: <p>I was wondering if there was a way, from a web js function, to share a link a on private message on facebook messenger app using url scheme such as fb-messenger://new (which open facebook messenger on new message if the user has the app on its device).</p>
  
  <p>I can't find anything about url parameters allowing to embed a link.
  Does someone has an idea about how we could do that?</p>
  
  <p>thanks</p>