code: public QueryProfileRequestBuilder addPromotionCategories(final String category0, final String... categories) {
          promotionCategories.add(category0);
          promotionCategories.addAll(Arrays.asList(categories));
          return this;
      }
docs: Adds categories to the promotion_categories parameter
  
  @param category0  The first category to add
  @param categories Additional categories to add
  @return this