<V extends FileAttributeView> @Nullable V getFileAttributeView(FileLookup lookup, Class<V> type) {
    state.checkOpen();
    return attributes.getFileAttributeView(lookup, type);
  }
Returns an attribute view of the given type for the given file lookup callback, or {@code null}
if the view type is not supported.
jimfs/src/main/java/com/google/common/jimfs/JimfsFileStore.java