@Test
  public void hashCodeOfMap() {
    Map<Integer, Integer> map = new HashMap<Integer, Integer>() {
      {
        put(1, 2);
        put(3, 4);
      }
    };
    assertThat(Objects.hashCode(map)).isEqualTo(10);
  }
The test serves two purposes:
<p>
Since Geode hashes rely heavily on the Java implementation hashes. If those were to differ
between version it could pose difficulties in routing or finding keys on the correct servers.
<p>
It also serves as a comparison for hashing in other languages that need to match the Java hash
algorithm for specific types.
geode-core/src/test/java/org/apache/geode/cache/util/ObjectsTest.java