private AggregatedHttpResponse response(byte[] body) {
        return AggregatedHttpResponse.of(ResponseHeaders.builder(HttpStatus.OK)
                                                        .contentType(MediaType.JSON)
                                                        .build(), HttpData.wrap(body));
    }
Reference from zipkin2.server.internal.ZipkinQueryApiV2 for the API consistent.
oap-server/server-query-plugin/zipkin-query-plugin/src/main/java/org/apache/skywalking/oap/query/zipkin/handler/ZipkinQueryHandler.java