@Override
  public FileChannel newFileChannel(
      Path path, Set<? extends OpenOption> options, FileAttribute<?>... attrs) throws IOException {
    JimfsPath checkedPath = checkPath(path);
    if (!checkedPath.getJimfsFileSystem().getFileStore().supportsFeature(FILE_CHANNEL)) {
      throw new UnsupportedOperationException();
    }
    return newJimfsFileChannel(checkedPath, options, attrs);
  }
Returns the default file system view for the given path.
jimfs/src/main/java/com/google/common/jimfs/JimfsFileSystemProvider.java