public FutureResponseAs<ResponseEntity<T>> orElseJson(
            Class<? extends T> clazz, ObjectMapper objectMapper) {
        return orElse(AggregatedResponseAs.json(clazz, objectMapper));
    }
Returns {@link FutureResponseAs} that deserializes the {@link HttpResponse} based on the configured
deserializers so far and deserializes to the {@link Class} lastly using the {@link ObjectMapper}
if none of the {@link Predicate} of configured deserializers pass.
core/src/main/java/com/linecorp/armeria/client/JsonConditionalResponseAs.java