What does this schema mean bank://x-bank-app

enter code hereI'm using a WebView in flutter. I'm using this plugin from @pichillilorenzo. Basically clicking a link brings the user to a webpage. All good. But once in the webpage(in the webview)if the user clicks a button (from the web page)a browser open up. And the 'url' is of the form bank://x-bank-app.... The browser of course doesn't recognise the schema and return an error. I presume the website can tell the user is on a mobile device and this schema is to send the user to the app on the phone? My question is what is this schema? And is there a way I can prevent it from loading ?