std::vectormyVec;
boost::filesystem::path myPath("/home/user/file.txt");
Eigen::MatrixXd myMatrix(3,3);In this example, the QualifiedName "Eigen::MatrixXd" is used to create a 3x3 matrix of double-precision floating point numbers using the Eigen library. In each of these examples, the QualifiedName provides the full path to a specific class or function within a package or library. This allows the programmer to use the functionality of external packages and libraries without worrying about naming conflicts with their own code.