public static HMap <K, V> addRange <K, V>(HMap <K, V> map, IEnumerable <KeyValuePair <K, V> > keyValues) => map.AddRange(keyValues);
public static HMap <K, V> addRange <K, V>(HMap <K, V> map, IEnumerable <KeyValuePair <K, V> > keyValues) => map.AddRange(keyValues);