@Override
  public TextDescriptor @NotNull [] getExampleUsagesBefore() {
    if (myExampleUsagesBefore == null) {
      myExampleUsagesBefore = retrieveURLs(BEFORE_TEMPLATE_PREFIX, EXAMPLE_USAGE_URL_SUFFIX);
    }
    return myExampleUsagesBefore;
  }
@Override
  public TextDescriptor @NotNull [] getExampleUsagesBefore()