fNlsHolder = NLSHolder.create(cu);
NLSInfo nlsInfo = new NLSInfo(cu); fSubstitutions = NLSHolder.create(cu, nlsInfo).getSubstitutions(); fNlsHint = new NLSHint(fSubstitutions, cu, nlsInfo);
    private NLSRefactoring(ICompilationUnit cu, CodeGenerationSettings codeGenerationSettings) {        Assert.isNotNull(cu);        Assert.isNotNull(codeGenerationSettings);        fCu = cu;        fCodeGenerationSettings = codeGenerationSettings;        fNlsHolder = NLSHolder.create(cu);    }