@Override
  public boolean equals(Object o) {
    if (this == o) return true;
    if (!(o instanceof DefaultUnresolvedExternalDependency)) return false;
    if (!super.equals(o)) return false;
    DefaultUnresolvedExternalDependency that = (DefaultUnresolvedExternalDependency)o;
    return Objects.equal(failureMessage, that.failureMessage);
  }
@Override
  public boolean equals(Object o)