public MpvGetPropertyReplyEventArgs(ulong replyUserData, MpvError error, MpvEventProperty eventProperty)
 {
     ReplyUserData = replyUserData;
     Error         = error;
     EventProperty = eventProperty;
 }
 public MpvPropertyChangeEventArgs(ulong replyUserData, MpvEventProperty eventProperty)
 {
     ReplyUserData = replyUserData;
     EventProperty = eventProperty;
 }