+ base_dn => { optional => 1 },
+ bind_dn => { optional => 1 },
+ user_attr => { optional => 1 },
+ filter => { optional => 1 },
+ sync_attributes => { optional => 1 },
+ user_classes => { optional => 1 },
+ group_dn => { optional => 1 },
+ group_name_attr => { optional => 1 },
+ group_filter => { optional => 1 },
+ group_classes => { optional => 1 },