toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (appId != null) 'appId': appId!,
if (appInstallReason != null) 'appInstallReason': appInstallReason!,
if (appInstallSource != null) 'appInstallSource': appInstallSource!,
if (appInstallTime != null) 'appInstallTime': appInstallTime!,
if (appType != null) 'appType': appType!,
};