Bug 19278 jar source attachment: jar icon not refreshed [package explorer] [browsing]
F2 .a jar with no source attached .attach source the icon is still suggesting that no source is attached
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/packageview/PackageExplorerContentProvider.java
if (isWorkingCopy(element)) {
				refreshWorkingCopy((IWorkingCopy)element);
				return;
			}
			Object parent= internalGetParent(element);			
			postRemove(element);
			if (parent instanceof IPackageFragment) 
				updatePackageIcon((IPackageFragment)parent);
			
			 
			if (isPackageFragmentEmpty(element.getParent())) {
				if (fViewer.testFindItem(parent) != null)
					postRefresh(internalGetParent(parent));
			}  
			return;
		}
		if (kind == IJavaElementDelta.ADDED) { 
			
			
			if (isWorkingCopy(element)) {
				refreshWorkingCopy((IWorkingCopy)element);
				return;
			}
			Object parent= internalGetParent(element);
			
			 
			if (parent instanceof IPackageFragment) {
				Object grandparent= internalGetParent(parent);