# toJson method Null safety

Map<String, dynamic> toJson()

## Implementation

    Map<String, dynamic> toJson() {
      final Map<String, dynamic> data = new Map<String, dynamic>();
      data['sdkAppId'] = this.sdkAppId;
      data['userId'] = this.userId;
      data['userSig'] = this.userSig;
      data['roomId'] = this.roomId;
      data['strRoomId'] = this.strRoomId;
      data['role'] = this.role;
      data['streamId'] = this.streamId;
      data['userDefineRecordId'] = this.userDefineRecordId;
      data['privateMapKey'] = this.privateMapKey;
      data['businessInfo'] = this.businessInfo;
      return data;
    }