def find_by_slug(slug)
      SlugFinder.new(slug: slug, dao: dao, factory: factory).find
    end
def find_by_slug(slug)
      SlugFinder.new(slug: slug, dao: dao, factory: factory).find
    end
Find a record in the DAO and, on success, return a corresponding entity
 using the specified [slug](http://en.wikipedia.org/wiki/Semantic_URL#Slug),
 *not* a numeric record ID, as a search identifier.
 @param slug [String] [Slug](http://en.wikipedia.org/wiki/Semantic_URL#Slug)
                      for record to be deleted.
 @return [Repository::Support::StoreResult] An object containing
     information about the success or failure of an action.
 @since 0.0.3