code: func _escDir(useLocal bool, name string) http.FileSystem {
  	if useLocal {
  		return _escDirectory{fs: _escLocal, name: name}
  	}
  	return _escDirectory{fs: _escStatic, name: name}
  }
docs: // _escDir returns a http.Filesystem for the embedded assets on a given prefix dir.
  // If useLocal is true, the filesystem's contents are instead used.