title: VSCode API check if path exists
body: <p>In a VSCode extension, how can I check if a file path exists without opening or reading the file?</p>
  
  <p>The closest thing I've found are <code>vscode.workspace.fs.Readfile</code> and <code>vscode.workspace.openTextDocument</code> (<a href="https://code.visualstudio.com/api/references/vscode-api#FileSystem" rel="noreferrer">https://code.visualstudio.com/api/references/vscode-api#FileSystem</a>), but again, I do not want to open or read the file. Is there a way to do this? </p>