code: @SuppressWarnings({"WeakerAccess", "unused"}) // For library users
      public void registerFilters(List<AlgoliaFilter> filters) {
          for (final AlgoliaFilter filter : filters) {
              searcher.addFacet(filter.getAttribute());
          }
      }
docs: Registers your facet filters, adding them to this InstantSearch's widgets.
  
  @param filters a List of facet filters.