@Ignore("commented out because it needs to be verified manually")
  @Test
  public void testHistogram() throws Exception {
    Set<Object> set1 = new HashSet<>();
    final Set<Object> set2 = new HashSet<>();
    Object object3 = new Object();
    set1.add(set2);
    set2.add(object3);

    System.setProperty(GeodeGlossary.GEMFIRE_PREFIX + "ObjectSizer.SIZE_OF_CLASS",
        "org.apache.geode.internal.size.SizeOfUtil0");
    System.out.println(ObjectGraphSizer.histogram(set1, true));
  }
This test is commented out because it needs to be verified manually
geode-core/src/test/java/org/apache/geode/internal/size/ObjectTraverserJUnitTest.java