#includeIn this example, we create a ContainerNode object representing the element of an HTML document. We then add child nodes representing the title and meta tags, and print out the resulting HTML code using the toString() method of the head node. The code example above uses the cpp package library to create and manipulate ContainerNode objects.#include int main() { cpp::ContainerNode head("head"); head.addChild(cpp::ContainerNode("title", "Example Page")); head.addChild(cpp::ContainerNode("meta", "", { {"name", "description"}, {"content", "An example web page"} })); std::cout << head.toString() << std::endl; }