public final Logger getLogger(final Class<?> clazz) {
    return getLogger(clazz.getName());
  }
@Test
  public void testMultiLevel() {
    Logger wxyz = lc.getLogger("w.x.y.z");
    LoggerTestHelper.assertNameEquals(wxyz, "w.x.y.z");
    LoggerTestHelper.assertLevels(null, wxyz, Level.DEBUG);

    Logger wx = lc.getLogger("w.x");
    wx.setLevel(Level.INFO);
    LoggerTestHelper.assertNameEquals(wx, "w.x");
    LoggerTestHelper.assertLevels(Level.INFO, wx, Level.INFO);
    LoggerTestHelper.assertLevels(null, lc.getLogger("w.x.y"), Level.INFO);
    LoggerTestHelper.assertLevels(null, wxyz, Level.INFO);
  }