[Closed] getting access to group node thinking particles

My final objective is to get the ($.classof) and (superclassof $) and (classof $) the subgrop nodes to use in c++

TP = $Thinking001
TPMaster = TP.MasterDynamic

TPMaster now is a ReferenceTarget of the master group. *I need to get access to the subgroup nodes? *Does anyone know anything about this?

Thanks