public AnalyzerOptions AnalyzerOptions
    {
        get
        {
            if (analyzerOptions == null)
            {
                this.analyzerOptions = new AnalyzerOptions(this.additionalDocumentStates.Values.Select(d => new AdditionalDocumentStream(d)), globalOptions: null);
            }

            return analyzerOptions;
        }
    }

    private static AnalyzerOptions CreateAnalyzerOptions(ImmutableDictionary<DocumentId, TextDocumentState> additionalDocStates)
    {
        return new AnalyzerOptions(additionalDocStates.Values.Select(d => new AdditionalDocumentStream(d)), globalOptions: null);
    }