code: public static @NotNull ImmutableValueMap of(
        @NotNull String k1, @NotNull Object v1,
        @NotNull String k2, @NotNull Object v2,
        @NotNull String k3, @NotNull Object v3) {
      return new ImmutableValueMap(ImmutableMap.<String, Object>of(k1, v1, k2, v2, k3, v3));
    }
docs: Returns an immutable map containing the given entries, in order.
  @param k1 Key 1
  @param v1 Value 1
  @param k2 Key 2
  @param v2 Value 2
  @param k3 Key 3
  @param v3 Value 3
  @return ImmutableValueMap
  @throws IllegalArgumentException if duplicate keys are provided