GTMessageModel constructor Null safety

GTMessageModel({String? messageId, String? payload, String? payloadId, String? taskId, String? title, bool? offLine, String? content})

Implementation

GTMessageModel(
    {this.messageId,
    this.payload,
    this.payloadId,
    this.taskId,
    this.title,
    this.offLine,
    this.content});