logger.error("Failed to access {}, code: {}.", url, response.getStatusLine().getStatusCode());
                return null;
            }

            data.setContent(EntityUtils.toString(response.getEntity(), Charsets.UTF_8));
            final Header[] headers = response.getAllHeaders();
            for (final Header header : headers) {

    protected <RESULT extends RelatedContent> RESULT createEntity(Map<String, Object> source, Class<? extends RESULT> entityType) {
        try {
            final RESULT result = entityType.newInstance();
            result.setContent(DfTypeUtil.toString(source.get("content")));
            result.setCreatedBy(DfTypeUtil.toString(source.get("createdBy")));
            result.setCreatedTime(DfTypeUtil.toLong(source.get("createdTime")));

    protected final Map<String, PropertyGateway> _epgMap = newHashMap();
    {
        setupEpg(_epgMap, et -> ((RelatedContent) et).getContent(), (et, vl) -> ((RelatedContent) et).setContent(DfTypeUtil.toString(vl)),
                "content");
        setupEpg(_epgMap, et -> ((RelatedContent) et).getCreatedBy(),
                (et, vl) -> ((RelatedContent) et).setCreatedBy(DfTypeUtil.toString(vl)), "createdBy");

    private RelatedContent createRelatedContent(String term, String content, String virtualHost) {
        RelatedContent entity = new RelatedContent();
        entity.setTerm(term);
        entity.setContent(content);
        entity.setVirtualHost(virtualHost);
        return entity;
    }

    // Mock classes

    static class MockRelatedContentBhv extends RelatedContentBhv {