private CopyOnWriteHashMap map5() {
    CopyOnWriteHashMap map = newMap();
    assertTrue(map.isEmpty());
    map.put(one, "A");
    map.put(two, "B");
    map.put(three, "C");
    map.put(four, "D");
    map.put(five, "E");
    assertFalse(map.isEmpty());
    assertEquals(5, map.size());
    return map;
  }
Create a map from Integers 1-5 to Strings "A"-"E".
geode-core/src/integrationTest/java/org/apache/geode/internal/util/concurrent/CopyOnWriteHashMapJUnitTest.java