@Config("resource-groups.config-db-url")
    public DbResourceGroupConfig setConfigDbUrl(String configUrl)
    {
        this.configUrl = configUrl;
        return this;
    }
@Test
    public void testDefaults()
    {
        assertRecordedDefaults(ConfigAssertions.recordDefaults(DbResourceGroupConfig.class)
                .setConfigDbUrl(null));
    }