namespace System.DirectoryServices.ActiveDirectory
{
    public delegate bool SyncUpdateCallback(SyncFromAllServersEvent eventType, string? targetServer, string? sourceServer, SyncFromAllServersOperationException? exception);
    {
        public virtual bool Invoke(SyncFromAllServersEvent eventType, string? targetServer, string? sourceServer, SyncFromAllServersOperationException? exception);
    }
}