String (@NotNull PsiMethod method, boolean acceptSelf) { PsiMethod[] superMethods = composeSuperMethods(method, acceptSelf); if (superMethods.length == 0) return null; String divider = GutterTooltipBuilder.getElementDivider(false, false, superMethods.length); AtomicReference<String> reference = new AtomicReference<>(""); // optimization: calculate next divider only once return GutterTooltipHelper.getTooltipText( Arrays.asList(superMethods), superMethod -> getTooltipPrefix(method, superMethod, reference.getAndSet(divider)), superMethod -> isSameSignature(method, superMethod), IdeActions.ACTION_GOTO_SUPER); }