private @Nullable Set<String> findConfigurablesByDescriptions(@NotNull Set<String> descriptionOptions) {
    Set<String> helpIds = null;
    for (String prefix : descriptionOptions) {
      final Set<OptionDescription> optionIds = getAcceptableDescriptions(prefix);
      if (optionIds == null) {
        return null;
      }

      final Set<String> ids = new HashSet<>();
      for (OptionDescription id : optionIds) {
        ids.add(id.getConfigurableId());
      }
      if (helpIds == null) {
        helpIds = ids;
      }
      helpIds.retainAll(ids);
    }
    return helpIds;
  }
private @Nullable Set<String> findConfigurablesByDescriptions(@NotNull Set<String> descriptionOptions)