public SortedMap<String, HealthCheck.Result> runHealthChecks() {
        return runHealthChecks(HealthCheckFilter.ALL);
    }
@Test
    public void runsRegisteredHealthChecks() {
        final Map<String, HealthCheck.Result> results = registry.runHealthChecks();

        assertThat(results).contains(entry("hc1", r1));
        assertThat(results).contains(entry("hc2", r2));
        assertThat(results).containsKey("ahc");
    }