BTaggingSelectionJsonTool::FractionAccessor Node1 BTaggingSelectionJsonTool ::FractionAccessor + fraction + isTarget + FractionAccessor() Node2 SG::ConstAccessor< float > # m_auxid + ConstAccessor() + ConstAccessor() + ConstAccessor() + operator()() + operator()() + withDefault() + withDefault() + getDataArray() + getDataSpan() + isAvailable() + auxid() # ConstAccessor() # ConstAccessor() Node2->Node1 +accessor