private void ensureUnequal(CosmosChangeFeedFindToken token1, CosmosChangeFeedFindToken token2) {
    assertFalse("Tokens shouldn't match", token1.equals(token2));
  }
helper to ensure that token passed are not equal
@param token1 token to be checked.
@param token2 token to be checked.
ambry-cloud/src/test/java/com/github/ambry/cloud/azure/CosmosChangeFeedFindTokenTest.java