public static ICompilationUnit getWorkingCopy(ICompilationUnit cu) throws JavaModelException {
public static ICompilationUnit getWorkingCopy(ICompilationUnit cu) {
	public static ICompilationUnit getWorkingCopy(ICompilationUnit cu) throws JavaModelException {		if (cu == null)			return null;		if (cu.isWorkingCopy())			return cu;					return (ICompilationUnit)cu.findSharedWorkingCopy(JavaUI.getBufferFactory());	}