public FutureResponseAs<ResponseEntity<T>> orElseJson(
            TypeReference<? extends T> typeRef, ObjectMapper objectMapper) {
        return orElse(AggregatedResponseAs.json(typeRef, objectMapper));
    }
Returns {@link FutureResponseAs} that deserializes the {@link HttpResponse} based on the configured
deserializers so far and deserializes to the {@link TypeReference} 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