docs: public static <V1, V2, V3> HMap hMap(TypeSafeKey<?, V1> key1, V1 value1,
                                           TypeSafeKey<?, V2> key2, V2 value2,
                                           TypeSafeKey<?, V3> key3, V3 value3) {
          return hMap(key1, value1,
                      key2, value2)
                  .put(key3, value3);
      }