ExpressionParsing::RelayProxyLoader Node1 ExpressionParsing:: RelayProxyLoader   + getAccessorFromString() + variableType() + variableTypeFromString() Node2 ExpressionParsing:: IProxyLoader   + ~IProxyLoader() + reset() + getAccessorFromString() Node2->Node1 Node3 ExpressionParsing:: IAccessor   + ~IAccessor() + variableType() + loadInt() + loadDouble() + loadVecInt() + loadVec() Node3->Node2