public static ULong ulong(String value) throws NumberFormatException {
        return value == null ? null : ULong.valueOf(value);
    }
Create an <code>unsigned long</code>

@throws NumberFormatException If <code>value</code> does not contain a
                              parsable <code>unsigned long</code>.
@see ULong#valueOf(String)
tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-microsoft-module/src/main/java/org/apache/tika/parser/microsoft/onenote/fsshttpb/unsigned/Unsigned.java