@Test
  public void testAreNullObjectsEqual() throws Exception {
    his = createHashIndexSet();
    assertTrue(his.areObjectsEqual(null, null));
  }
Remove all should still remove all portfolios provided, even if there are more provided then
contained
geode-core/src/test/java/org/apache/geode/cache/query/internal/index/HashIndexSetJUnitTest.java