return JavaPlugin.getDefault().getWorkingCopyManager().getWorkingCopy(editorInput);
if (editorInput != null) return JavaPlugin.getDefault().getWorkingCopyManager().getWorkingCopy(editorInput);  return null;
	public static ICompilationUnit getWorkingCopy(ICompilationUnit cu) throws JavaModelException {		if (cu.isWorkingCopy()) {			return cu;		}		IEditorInput editorInput= getEditorInput(cu);		return JavaPlugin.getDefault().getWorkingCopyManager().getWorkingCopy(editorInput);	}