#include <xtd/any>#include <xtd/optional>#include <array>#include <deque>#include <stdexcept>#include <functional>#include <forward_list>#include <iostream>#include <iomanip>#include <list>#include <map>#include <set>#include <system_error>#include <tuple>#include <typeindex>#include <type_traits>#include <unordered_map>#include <unordered_set>#include <utility>#include <valarray>#include <vector>Contains generic stream output methods.