title: How to close TextDocument in VS Code?
body: <p>I'm writing vscode extension.</p>
  
  <p>I opened a TextDocument with <code>vscode.window.showTextDocument</code>, and want to close it later. But I can't find api to close it. Finally I found <a href="https://github.com/Microsoft/vscode/commit/d625b55e9ec33f95d2fe1dd7a4b7cb50abb4772c#diff-4654cd1aa2a333bc6cc7ca0d19fdfb6e" rel="noreferrer">this commit</a>, it removed <code>closeTextDocument</code>. What should I do now?</p>