isAnyBlank method of StringUtils doesn't do null check

my string-a is null. i tried calling StringUtis.isNoneBlank(a) method which gives true when string a is null.

i debugged it and found that isNoneBlank() in turn calls isAnyBlank() method which gives false when the string a is null.

and in isNoneBlank() method ,it returns ! isAnyBlank(css) so it gives me true where it should give false.

We have used commonsLangVersion = '2.6' version in gradle and the package imported is org.apache.commons.lang3

Let me know in case of any query.