static AggregationStrategy from(List<AnnotatedValueResolver> resolvers) {
            AggregationStrategy strategy = NONE;
            for (final AnnotatedValueResolver r : resolvers) {
                switch (r.aggregationStrategy()) {
                    case ALWAYS:
                        return ALWAYS;
                    case FOR_FORM_DATA:
                        strategy = FOR_FORM_DATA;
                        break;
                }
            }
            return strategy;
        }
Returns {@link AggregationStrategy} which specifies how to aggregate the request
for injecting its parameters.
core/src/main/java/com/linecorp/armeria/internal/server/annotation/AnnotatedValueResolver.java