export function getModelAndUsersByType(model: any, userType: any, id: any, notification_setting_type: any, callback: any): void;
export function addNotificationsForUsers(activity: any, users: any, notification_type: any, notification_setting_type: any, uniqueUserIds: any, callback: any): void;
export function addOrPossiblyGroupNotification(model: any, notification_type: any, notification_setting_type: any, activity: any, user: any, priority: any, callback: any): void;