TextEdit res= rewrite.rewriteAST(document);
TextEdit res= rewrite.rewriteAST(document, null);
	protected String evaluateRewrite(ICompilationUnit cu, NewASTRewrite rewrite) throws Exception {		Document document= new Document(cu.getSource());		TextEdit res= rewrite.rewriteAST(document);				res.apply(document);		return document.get();	}