typeSync method
override
    Syncronously finds the type of file system object that a path points
to. Returns a io.FileSystemEntityType.
io.FileSystemEntityType.LINK will only be returned if followLinks is
false, and path points to a link
If the path does not point to a file system object or an error occurs
then io.FileSystemEntityType.notFound is returned.
Implementation
@override
FileSystemEntityType typeSync(String path, {bool followLinks = true}) {
  String realPath;
  try {
    realPath = _real(path, followLinks: followLinks);
  } on FileSystemException {
    return FileSystemEntityType.notFound;
  }
  return delegate.typeSync(realPath, followLinks: false);
}