return null;
return flatClass;
    public static JClassDeclaration flatten(SIRStream str) {	// name the components	Namer.assignNames(str);	// make single structure	JClassDeclaration flatClass = Structurer.structure(str);	// build schedule as set of higher-level work functions	IRPrinter printer = new IRPrinter();	flatClass.accept(printer);	printer.close();	// add LIR hooks to init functions	return null;    }