/// <summary>
/// The functions tests if a group is a special group which was created for
/// PwdSahre only.
/// </summary>
/// <param name="group">The group we want to test.</param>
/// <returns>True if the specified group was a special KeeShare group.</returns>
private bool IsKeeShareFolder(PwDatabase database, PwGroup group)
{
Debug.Assert(group != null);
//only three groups are interesting for us: "Users" / "Groups" / "SyncGroup"
return(group.ParentGroup != null &&
(group.IsInsideParent(database.GetUsersGroup()) ||
group.IsInsideParent(database.GetGroupsGroup()) ||
group.IsInsideParent(database.GetSyncGroup())));
}