@Override
  public String toString() {
    return toString(true);
  }
@Test
  public void testToStringWithQuota() {
    long length = 11111;
    long fileCount = 22222;
    long directoryCount = 33333;
    long quota = 44444;
    long spaceConsumed = 55555;
    long spaceQuota = 66665;

    ContentSummary contentSummary = new ContentSummary.Builder().length(length).
        fileCount(fileCount).directoryCount(directoryCount).quota(quota).
        spaceConsumed(spaceConsumed).spaceQuota(spaceQuota).build();
    String expected = "       44444          -11111           66665           11110"
        + "        33333        22222              11111 ";
    assertEquals(expected, contentSummary.toString(true));
  }