@Override
  public ContentSummary getContentSummary(Path f) throws IOException {
    return fs.getContentSummary(fullPath(f));
  }
@Test
  public void testGetContentSummary() throws IOException {
    // GetContentSummary of a dir
    fSys.mkdirs(new Path("/newDir/dirFoo"));
    ContentSummary cs = fSys.getContentSummary(new Path("/newDir/dirFoo"));
    Assert.assertEquals(-1L, cs.getQuota());
    Assert.assertEquals(-1L, cs.getSpaceQuota());
  }