public String toJson(boolean pretty) { return SlimeUtils.toJson(inspector, !pretty); }
@Test
    void add_all() {
        var expected =
                """
                [
                  1,
                  2,
                  3,
                  4,
                  5,
                  6
                ]
                """;
        var json = Json.Builder.newArray()
                .addAll(Json.Builder.Array.newArray().add(1).add(2).add(3))
                .add(4)
                .addAll(Json.Builder.Array.newArray().add(5))
                .add(6)
                .build()
                .toJson(true);
        assertEquals(expected, json);
    }