adding a comment about ResourceUpdaterMatcher customization

Signed-off-by: Steve Hawkins <[email protected]>

Author: shawkins

Diff for: operator-framework-core/src/main/java/io/javaoperatorsdk/operator/processing/dependent/kubernetes/KubernetesDependentResource.java

@@ -43,11 +43,14 @@ public abstract class KubernetesDependentResource<R extends HasMetadata, P exten
   private final boolean garbageCollected = this instanceof GarbageCollected;
   private KubernetesDependentResourceConfig<R> kubernetesDependentResourceConfig;
 
+  private boolean usingCustomResourceUpdateMatcher;
+
   @SuppressWarnings("unchecked")
   public KubernetesDependentResource(Class<R> resourceType) {
     super(resourceType);
 
-    updaterMatcher = this instanceof ResourceUpdaterMatcher
+    usingCustomResourceUpdateMatcher = this instanceof ResourceUpdaterMatcher;
+    updaterMatcher = usingCustomResourceUpdateMatcher
         ? (ResourceUpdaterMatcher<R>) this
         : GenericResourceUpdaterMatcher.updaterMatcherFor(resourceType);
   }
@@ -190,7 +193,7 @@ protected void addMetadata(boolean forMatch, R actualResource, final R target, P
   }
 
   protected boolean useSSA(Context<P> context) {
-    if (this instanceof ResourceUpdaterMatcher) {
+    if (usingCustomResourceUpdateMatcher) {
       return false;
     }
     Optional<Boolean> useSSAConfig =