@VisibleForTesting
  static <T extends Comparable<? super T>> boolean lt(T a, T b) {
    return a.compareTo(b) < 0;
  }
Return {@code true} if {@code a} is less than {@code b}.
jib-plugins-common/src/main/java/com/google/cloud/tools/jib/plugins/common/VersionChecker.java