@Override
    public int getLength() {
        return precomputed.length;
    }
@Test
    void testSingleFieldSerializer() {
        TEST_FIELD_SERIALIZERS.forEach(
                t -> {
                    @SuppressWarnings("unchecked")
                    TypeSerializer<Object>[] fieldSerializers = new TypeSerializer[] {t.f0};
                    List<Object>[] instances =
                            Arrays.stream(t.f1)
                                    .map(Arrays::asList)
                                    .toArray((IntFunction<List<Object>[]>) List[]::new);
                    runTests(t.f0.getLength(), fieldSerializers, instances);
                });
    }