@Test
  public void testRemove() throws Exception {
    int numEntries = 20;
    setupHashIndexSet(numEntries);

    assertEquals(numEntries, his.size());
    portfoliosMap.forEach((k, v) -> his.remove(k, v));
    assertEquals(0, his.size());
  }
Add multiple portfolios with the same id they should collide, we should then be able to look up
each one correctly
geode-core/src/test/java/org/apache/geode/cache/query/internal/index/HashIndexSetJUnitTest.java