toJson method
Implementation
core.Map<core.String, core.dynamic> toJson() => {
if (activityTypes != null) 'activityTypes': activityTypes!,
if (dateRange != null) 'dateRange': dateRange!,
if (pageSize != null) 'pageSize': pageSize!,
if (pageToken != null) 'pageToken': pageToken!,
if (user != null) 'user': user!,
if (viewId != null) 'viewId': viewId!,
};