int count = relatedContentHelper.load();
        assertEquals(3, count); // Three virtual host keys: "host1", "host2", ""
    }

    @Test
    public void test_getHostKey_emptyVirtualHost() {
        RelatedContent entity = createRelatedContent("term", "content", "");
        String key = relatedContentHelper.getHostKey(entity);
        assertEquals("", key);
    }

    @Test