@Override
  public boolean equals(Object o) {
    if (this == o) return true;
    if (o == null || getClass() != o.getClass()) return false;

    SemVer semVer = (SemVer)o;
    return myMajor == semVer.myMajor
           && myMinor == semVer.myMinor
           && myPatch == semVer.myPatch
           && Objects.equals(myPreRelease, semVer.myPreRelease);
  }
@Override
  public boolean equals(Object o)