@Override
  public boolean equals(Object o) {
    if (this == o) return true;
    if (o == null || getClass() != o.getClass()) return false;
    if (!super.equals(o)) return false;
    ExternalSystemErrorEvent event = (ExternalSystemErrorEvent)o;
    return Objects.equals(myEvent, event.myEvent) &&
           Objects.equals(myErrorClass, event.myErrorClass);
  }
@Override
  public boolean equals(Object o)