@Test
  public void testHashIndexSetAddUseRemoveTokenSlot() throws Exception {
    int numEntries = 20;
    setupHashIndexSet(numEntries);
    assertEquals(numEntries, his.size());
    his.removeAll(portfolioSet);
    assertEquals(numEntries, his.hashIndexSetProperties.removedTokens);
    assertEquals(0, his.size());
    addPortfoliosToHashIndexSet(portfoliosMap, his);

    assertEquals(0, his.hashIndexSetProperties.removedTokens);
    assertEquals(numEntries, his.size());
  }
we have to be sure that we dont cause a compaction or growth or else removed tokens will be
removed and a new backing array created
geode-core/src/test/java/org/apache/geode/cache/query/internal/index/HashIndexSetJUnitTest.java