GsfMaterial::Combined Node1 GsfMaterial::Combined + numEntries Node2 std::array< AmgVector (5), GSFConstants::maxNumberof MatComponents > + elements Node2->Node1 +deltaParameters Node3 std::array< double, GSFConstants::maxNumberof MatComponents > + elements Node3->Node1 +deltaPs +weights Node4 std::array< AmgSymMatrix (5), GSFConstants::maxNumberof MatComponents > + elements Node4->Node1 +deltaCovariances