TestClass13 Node1 TestClass13 + ai + TestClass13() + TestClass13() + Set() + ~TestClass13() + print() + getKey() + isEqual() Node2 TestClass + TestClass() + ~TestClass() + print() + isEqual() + getKey() Node2->Node1 Node3 std::string Node3->Node2 +key Node4 std::basic_string< char > Node4->Node3