open static fun <K : Any, V : Any> toMultiValueMap(map: MutableMap<K, MutableList<V>>): MultiValueMap<K, V>
Adapt a Map<K, List<V>> to an MultiValueMap<K, V>.
Map<K, List<V>>
MultiValueMap<K, V>
map - the original map
map
Return the multi-value map
Since 3.1