是否可以将Map<String，List<Integer>>转换为MultiValueMap<String，Integer>

import org.springframework.util.LinkedMultiValueMap;
import org.springframework.util.MultiValueMap;

public class Main {
    public static void main(String[] args) {
        Map<String, List<Integer>> map = new HashMap<>();
        map.put("key1", Arrays.asList(1, 2, 3));
        map.put("key2", Arrays.asList(4, 5, 6));

        MultiValueMap<String, Integer> multiValueMap = new LinkedMultiValueMap<>();

        for (Map.Entry<String, List<Integer>> entry : map.entrySet()) {
            String key = entry.getKey();
            List<Integer> values = entry.getValue();

            for (Integer value : values) {
                multiValueMap.add(key, value);
            }
        }

        System.out.println(multiValueMap);
    }
}

{key1=[1, 2, 3], key2=[4, 5, 6]}