@Override
    public int deserializeDataElementDataFromByteArray(byte[] byteArray, int startIndex)
            throws TikaException, IOException {
        AtomicInteger index = new AtomicInteger(startIndex);
        this.cellManifestCurrentRevision =
                StreamObject.getCurrent(byteArray, index, CellManifestCurrentRevision.class);
        return index.get() - startIndex;
    }
Used to return the length of this element.

@param byteArray  A Byte array
@param startIndex Start position
@return The element length
tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-microsoft-module/src/main/java/org/apache/tika/parser/microsoft/onenote/fsshttpb/streamobj/CellManifestDataElementData.java