class GetOccupancyHeatMapParam { final DateTime year; final String communityId; final String spaceId; const GetOccupancyHeatMapParam({ required this.year, required this.communityId, required this.spaceId, }); Map toJson() { return { 'year': year.toIso8601String(), 'communityId': communityId, 'spaceId': spaceId, }; } }