def add_self_service_category_xml(ssvc)
      cats = ssvc.add_element('self_service_categories')
      return if self_service_categories.empty?
      self_service_categories.each do |cat|
        catelem = cats.add_element('category')
        catelem.add_element('name').text = cat[:name]
        catelem.add_element('display_in').text = cat[:display_in] if @self_service_data_config[:can_display_in_categories]
        catelem.add_element('feature_in').text = cat[:feature_in] if @self_service_data_config[:can_feature_in_categories]
      end
    end
def add_self_service_category_xml(ssvc)
      cats = ssvc.add_element('self_service_categories')
      return if self_service_categories.empty?
      self_service_categories.each do |cat|
        catelem = cats.add_element('category')
        catelem.add_element('name').text = cat[:name]
        catelem.add_element('display_in').text = cat[:display_in] if @self_service_data_config[:can_display_in_categories]
        catelem.add_element('feature_in').text = cat[:feature_in] if @self_service_data_config[:can_feature_in_categories]
      end
    end
add the xml for self-service categories