/src/main/java/org/htmlunit/html/HtmlRadioButtonInput.java
else if ( page != false && page.isHtmlPage( ) ) {
else if ( page != null && page.isHtmlPage ( ) ) {
final HtmlForm form = getEnclosingForm(); final boolean changed = !isChecked(); final Page page = getPage(); if (form != null) { form.setCheckedRadioButton(this); } <extra_id_0> setCheckedForPage((HtmlPage) page); } super.doClickStateUpdate(shiftKey, ctrlKey); return changed; } private void setCheckedForPage(final HtmlPage htmlPage) {