118   MapHNode *MN = dyn_cast_or_null<MapHNode>(CurrentNode);  in beginMapping()  local
119   if (MN) {  in beginMapping()
120     MN->ValidKeys.clear();  in beginMapping()
138   MapHNode *MN = dyn_cast<MapHNode>(CurrentNode);  in preflightKey()  local
139   if (!MN) {  in preflightKey()
143   MN->ValidKeys.push_back(Key);  in preflightKey()
144   HNode *Value = MN->Mapping[Key].get();  in preflightKey()
165   MapHNode *MN = dyn_cast_or_null<MapHNode>(CurrentNode);  in endMapping()  local
166   if (!MN)  in endMapping()
168   for (const auto &NN : MN->Mapping) {  in endMapping()
169     if (!MN->isValidKey(NN.first())) {  in endMapping()