Bug 327192 Concurrent access to file while decorating
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/ContentTypeDecorator.java
public void decorate(Object element, IDecoration decoration) {
		if (!(element instanceof IFile))
			return;
		IWorkbench workbench = PlatformUI.getWorkbench();
		if (workbench.isClosing())
			return;
		
		IFile file = (IFile) element;
		ImageDescriptor image = null;
		IContentDescription contentDescription = null;
		try {
			contentDescription = file.getContentDescription();
		} catch (CoreException e) {