public byte[] readBytes(int readingLength) throws IOException {
        return this.getBytes(readingLength * 8, readingLength);
    }
Reading the bytes specified by the byte length.

@param readingLength Specify the reading byte length.
@return Return the read bytes array.
tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-microsoft-module/src/main/java/org/apache/tika/parser/microsoft/onenote/fsshttpb/util/BitReader.java