In Project Explorer view,added a separator after the 'Refresh' command

Fixes #267

Author: deepika-u

bundles/org.eclipse.ui.navigator.resources/src/org/eclipse/ui/internal/navigator/resources/actions/ResourceMgmtActionProvider.java

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2006, 2018 IBM Corporation and others.
+ * Copyright (c) 2006, 2025 IBM Corporation and others.
  *
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
@@ -32,6 +32,7 @@
 import org.eclipse.core.runtime.Status;
 import org.eclipse.core.runtime.jobs.ISchedulingRule;
 import org.eclipse.jface.action.IMenuManager;
+import org.eclipse.jface.action.Separator;
 import org.eclipse.jface.resource.ImageDescriptor;
 import org.eclipse.jface.viewers.IStructuredSelection;
 import org.eclipse.jface.viewers.StructuredViewer;
@@ -147,6 +148,7 @@ public void fillContextMenu(IMenuManager menu) {
 		if (hasOpenProjects || selectionContainsNonProject) {
 			refreshAction.selectionChanged(selection);
 			menu.appendToGroup(ICommonMenuConstants.GROUP_BUILD, refreshAction);
+			menu.appendToGroup(ICommonMenuConstants.GROUP_BUILD, new Separator());
 		}
 		if (hasClosedProjects) {
 			openProjectAction.selectionChanged(selection);

tests/org.eclipse.ui.tests.navigator/src/org/eclipse/ui/tests/navigator/resources/ResourceMgmtActionProviderTests.java

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2024 Dave Carpeneto and others.
+ * Copyright (c) 2025 Dave Carpeneto and others.
  *
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
@@ -211,7 +211,7 @@ private void checkMenuHasCorrectContributions(boolean... actions) {
 	 */
 	private boolean menuHasContribution(String contribution) {
 		for (IContributionItem thisItem : manager.getItems()) {
-			if (thisItem.getId().equals(contribution)) {
+			if (thisItem.getId() != null && thisItem.getId().equals(contribution)) {
 				return true;
 			}
 		}