/src/main/java/org/htmlunit/html/HtmlPage.java
if ( i1 == null ) { index1 = -1; }
} private static Comparator<HtmlElement> createTabOrderComparator() { return (element1, element2) -> { final Short i1 = element1.getTabIndex(); final Short i2 = element2.getTabIndex(); final short index1; <extra_id_0> else { index1 = i1.shortValue(); } final short index2; if (i2 == null) { index2 = -1;