toJson method

Implementation

core.Map<core.String, core.dynamic> toJson() {
  final contactGroups = this.contactGroups;
  final nextPageToken = this.nextPageToken;
  final nextSyncToken = this.nextSyncToken;
  final totalItems = this.totalItems;
  return {
    'contactGroups': ?contactGroups,
    'nextPageToken': ?nextPageToken,
    'nextSyncToken': ?nextSyncToken,
    'totalItems': ?totalItems,
  };
}