code: protected function renderSlots(Page $page, array $slots, array $options = array())
      {
          $renderedSlots = array();
          $slots = $this->dispatchSlotsEvent(RenderEvents::SLOTS_RENDERING, $page, $slots);
          foreach ($slots as $slotName => $slot) {
              if (is_string($slot)) {
                  $renderedSlots[$slotName] = $slot;
                  continue;
              }
  
              if (!$slot instanceof Slot) {
                  continue;
              }
  
              $blocks = $slot->getEntitiesInUse();
              $renderedSlots[$slotName] = $this->templating->render(
                  'RedKiteCms/Resources/views/Slot/slot.html.twig',
                  array(
                      'options' => $options,
                      'slotname' => $slotName,
                      'data' => rawurlencode("[" . implode(",", $blocks)) . "]",
                      'next' => $slot->getNext(),
                  )
              );
          }
  
          return $slots = $this->dispatchSlotsEvent(RenderEvents::SLOTS_RENDERED, $page, $renderedSlots);
      }
docs: Renders the slots
  
  @param \RedKiteCms\FilesystemEntity\Page $page
  @param array $slots
  @param array $options
  
  @return array