Adapt to changed REST interfaces in Gerrit core (part 2)

Change-Id: If49d513cb9f80f545116c335c9096d957f79f30a
diff --git a/javatests/com/google/gerrit/plugins/checks/acceptance/api/GetCheckerIT.java b/javatests/com/google/gerrit/plugins/checks/acceptance/api/GetCheckerIT.java
index 84463c6..cb3f695 100644
--- a/javatests/com/google/gerrit/plugins/checks/acceptance/api/GetCheckerIT.java
+++ b/javatests/com/google/gerrit/plugins/checks/acceptance/api/GetCheckerIT.java
@@ -310,7 +310,7 @@
 
   @Test
   public void administrateCheckersCapabilityIsAdvertised() throws Exception {
-    Map<String, CapabilityInfo> capabilities = listCapabilities.apply(new ConfigResource());
+    Map<String, CapabilityInfo> capabilities = listCapabilities.apply(new ConfigResource()).value();
     String capability = "checks-administrateCheckers";
     assertThat(capabilities).containsKey(capability);
     CapabilityInfo info = capabilities.get(capability);