public void checkAccess(JimfsPath path) throws IOException {
    // just check that the file exists
    lookUpWithLock(path, Options.FOLLOW_LINKS).requireExists(path);
  }
Checks access to the file at the given path for the given modes. Since access controls are not
implemented for this file system, this just checks that the file exists.
jimfs/src/main/java/com/google/common/jimfs/FileSystemView.java