public JsonConditionalResponseAs<T> orElseJson(
            TypeReference<? extends T> typeRef, Predicate<AggregatedHttpResponse> predicate) {
        return orElseJson(typeRef, OBJECT_MAPPER, predicate);
    }
Sets the {@link Predicate} and {@link TypeReference} that the content is deserialized into the
{@link TypeReference} when the {@link AggregatedHttpResponse} passes the {@link Predicate}.
core/src/main/java/com/linecorp/armeria/client/JsonConditionalResponseAs.java