void (RegExpGroup group, HighlightManager highlightManager) { Editor editor = myRegExp.getEditor(); if (editor == null) { return; } final PsiElement[] array = {group}; List<RangeHighlighter> highlighter = new SmartList<>(); highlightManager.addOccurrenceHighlights(editor, array, RegExpHighlighter.MATCHED_GROUPS, true, highlighter); myRegExpHighlight = highlighter.get(0); }