[KISS] Fix context menu service handler count

Issue-Ref: 4020
Issue-Url: https://af3-developer.fortiss.org/issues/4020



Signed-off-by: Tiziano Munaro <munaro@fortiss.org>

org.fortiss.tooling.kernel.ui/src/org/fortiss/tooling/kernel/ui/introspection/details/handler/.ratings

 AllocationEditPartFactoryKISSDetailsUIHandler.java 96794fac55a7d37451d361312a0c4314695ede83 YELLOW
 ConnectionCompositorKISSDetailsUIHandler.java ebc85ae220655ca741af69c8957a8dd018de013d YELLOW
 ConstraintCheckerKISSDetailsUIHandler.java a4472923f74039e53162bac35694f0c01857315a YELLOW
-ContextMenuKISSDetailsUIHandler.java bcf6a8c6b749cf761621e31412c294705eaae028 YELLOW
+ContextMenuKISSDetailsUIHandler.java 6e329ca7f4e4919285a743cf49fba90e3789fcab YELLOW
 EObjectAware2KISSDetailsUIHandlerBase.java 301276017de4db9bdd7fb90df09eaba8342a9e26 YELLOW
 EObjectAwareKISSDetailsUIHandlerBase.java ff5a70e09a5a556cd7848179ca07031c87a3a17e YELLOW
 EclipseResourceStorageKISSDetailsUIHandler.java b4a8d448631af61f79196e2b225aec586a77179d YELLOW

org.fortiss.tooling.kernel.ui/src/org/fortiss/tooling/kernel/ui/introspection/details/handler/ContextMenuKISSDetailsUIHandler.java

@@ -39,7 +39,8 @@ public final class ContextMenuKISSDetailsUIHandler extends KISSDetailsUIHandlerB
 	@Override
 	public Node createDisplayControl() {
 		String h = "Type to search registered menu contributors:";
-		String f = "Number of registered menu contributors: " + getRootObject().getHandlerList();
+		String f = "Number of registered menu contributors: " +
+				getRootObject().getHandlerList().size();
 		return createFilteredTree(h, f);
 	}