validateValues(String text, Number expected) negativeInteger has a lexical representation consisting of a negative
sign ("-") followed by a finite-length sequence of decimal digits
(#x30-#x39).
negativeInteger has a lexical representation consisting of a negative
sign ("-") followed by a finite-length sequence of decimal digits
(#x30-#x39).
For example: -1, -12678967543233, -100000.
throws: Exception -