class PartyLedgerFilterParam { final String partyId; final String? duration; PartyLedgerFilterParam({ required this.partyId, this.duration, }); @override bool operator ==(Object other) => identical(this, other) || other is PartyLedgerFilterParam && runtimeType == other.runtimeType && partyId == other.partyId && duration == other.duration; @override int get hashCode => partyId.hashCode ^ duration.hashCode; }