@Override
  public void mkdir(final Path dir, final FsPermission permission,
      final boolean createParent) throws IOException, UnresolvedLinkException {
    myFs.mkdir(fullPath(dir), permission, createParent);
    
  }
@Test
  public void testRenameAcrossFs() throws IOException {
    fc.mkdir(new Path("/newDir/dirFoo"), FileContext.DEFAULT_PERM, true);
    // the root will get interpreted to the root of the chrooted fs.
    fc.rename(new Path("/newDir/dirFoo"), new Path("file:///dirFooBar"));
    FileContextTestHelper.isDir(fc, new Path("/dirFooBar"));
  }