code: def user_lists(user_id, options={})
        response = connection.get do |req|
          req.url "users/#{user_id}/lists", options
        end
        return_error_or_body(response, response.body.response.lists)
      end
docs: Get the lists for a given user.
  
   @param [String] user_id - The user to retrieve lists for.
   @param [Hash] options
   @option options String :group - One of: created, edited, followed, friends, or suggestions
   @option options String :ll - Location of the user, required in order to receive the suggested group.