Code to get all docs in lucene when using examine

MaxDocs.cs

        private int MaxDocs()
        {
            BaseSearchProvider searcher = ExamineManager.Instance.SearchProviderCollection["ExternalSearcher"];
            var baseSeacher = (LuceneSearcher) _searcher;
            var folder = baseSeacher.LuceneIndexFolder;
            var fsDir = FSDirectory.Open(folder);

            var reader = IndexReader.Open(fsDir, true);

            int maxDocCount = reader.NumDocs();

            reader.Dispose();
            fsDir.Dispose();

            return maxDocCount;
        }