private static void collectClasses(@NotNull IProperty pr, @NotNull List<? super String> classes) {
    String value = pr.getUnescapedValue();
    if (value == null) return;
    value = value.trim();
    String[] qnames = value.split("\\s*,\\s*");
    ContainerUtil.addAll(classes, qnames);
  }
private static void collectClasses(@NotNull IProperty pr, @NotNull List<? super String> classes)