** As thrown by Fancom.constclass FancomErr : Err {new make(Str msg, Err? cause := null) : super(msg, cause){}}** Thrown when a Dispatch call returns an 'VT_ERROR' valueconstclass FancomErrorErr : FancomErr {const Int errorValue new make(Str msg, Int errorValue) : super(msg){this.errorValue = errorValue}}** Thrown when a Dispatch call returns an invalid 'VT_HRESULT' valueconstclass FancomHResultErr : FancomErr {const Int hresultnew make(Str msg, Int hresult) : super(msg){this.hresult = hresult}}