class PaymentExecutionOperation { final String? stepRef; final String? operationRef; final String? gateway; final String? code; final String? state; final String? label; final String? failureCode; final String? failureReason; final DateTime? startedAt; final DateTime? completedAt; const PaymentExecutionOperation({ required this.stepRef, required this.operationRef, required this.gateway, required this.code, required this.state, required this.label, required this.failureCode, required this.failureReason, required this.startedAt, required this.completedAt, }); }