public void processFile(POIFSFileSystem filesystem, boolean listenForAllRecords)
                throws IOException, SAXException, TikaException {
            processFile(filesystem.getRoot(), listenForAllRecords);
        }
Entry point to listener to start the processing of a file.

@param filesystem          POI file system.
@param listenForAllRecords sets whether the listener is configured to listen
                           for all records types or not.
@throws IOException  on any IO errors.
@throws SAXException on any SAX parsing errors.
tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-microsoft-module/src/main/java/org/apache/tika/parser/microsoft/ExcelExtractor.java