Neos\ContentRepository\Domain\Service\Cache\FirstLevelNodeCache::setByPath PHP Method

    public function setByPath($path, NodeInterface $node = null)
    {
        $this->nodesByPath[$path] = $node;
        if ($node !== null) {
            $this->nodesByIdentifier[$node->getIdentifier()] = $node;
        }
    }

 /**
  * Finds all nodes lying on the path specified by (and including) the given
  * starting point and end point.
  *
  * @param mixed $startingPoint Either an absolute path or an actual node specifying the starting point, for example /sites/mysitecom
  * @param mixed $endPoint Either an absolute path or an actual node specifying the end point, for example /sites/mysitecom/homepage/subpage
  * @return array<\Neos\ContentRepository\Domain\Model\NodeInterface> The nodes found between and including the given paths or an empty array of none were found
  * @api
  */
 public function getNodesOnPath($startingPoint, $endPoint)
 {
     $startingPointPath = $startingPoint instanceof NodeInterface ? $startingPoint->getPath() : $startingPoint;
     $endPointPath = $endPoint instanceof NodeInterface ? $endPoint->getPath() : $endPoint;
     $nodeDataElements = $this->nodeDataRepository->findOnPath($startingPointPath, $endPointPath, $this->getWorkspace(), $this->getDimensions(), $this->isRemovedContentShown());
     $nodes = array();
     foreach ($nodeDataElements as $nodeData) {
         $node = $this->nodeFactory->createFromNodeData($nodeData, $this);
         if ($node !== null) {
             $nodes[] = $node;
             $this->firstLevelNodeCache->setByPath($node->getPath(), $node);
         }
     }
     return $nodes;
 }