/** Creates a new instance and populates the catetory list params mapping. */
public MultiCategoryListsFacetsExample() {
// index all Author facets in one category list and all Publish Date in another.
Map<CategoryPath,CategoryListParams> categoryListParams = new HashMap<CategoryPath,CategoryListParams>();
categoryListParams.put(new CategoryPath("Author"), new CategoryListParams("author"));
categoryListParams.put(new CategoryPath("Publish Date"), new CategoryListParams("pubdate"));
indexingParams = new PerDimensionIndexingParams(categoryListParams);
}