public ClassUsageGroup(@NotNull PsiClass aClass) {
   myQName = aClass.getQualifiedName();
   myText = createText(aClass);
   myClassPointer =
       SmartPointerManager.getInstance(aClass.getProject()).createSmartPsiElementPointer(aClass);
   myIcon = aClass.getIcon(Iconable.ICON_FLAG_VISIBILITY | Iconable.ICON_FLAG_READ_STATUS);
 }