在C++20中读/写具有给定键的std::multimap的所有值？

#include <iostream>
#include <map>

int main() {
    std::multimap<int, std::string> myMap;
    myMap.insert(std::make_pair(1, "apple"));
    myMap.insert(std::make_pair(2, "banana"));
    myMap.insert(std::make_pair(1, "orange"));
    myMap.insert(std::make_pair(3, "grape"));

    int key = 1;

    auto range = myMap.equal_range(key);

    std::cout << "Values with key " << key << ":" << std::endl;
    for (auto it = range.first; it != range.second; ++it) {
        std::cout << it->second << std::endl;
    }

    return 0;
}

Values with key 1:
apple
orange