PhpParser\Node::getSubNodeNames PHP Method

    public function getSubNodeNames();

 public static function isEqual(\PhpParser\Node $nodeA, \PhpParser\Node $nodeB)
 {
     if ($nodeA->getType() !== $nodeB->getType()) {
         return false;
     }
     $subNodesA = $nodeA->getSubNodeNames();
     $subNodesB = $nodeB->getSubNodeNames();
     if ($subNodesA !== $subNodesB) {
         return false;
     }
     foreach ($subNodesA as $key) {
         $valueA = $nodeA->{$key};
         $valueB = $nodeB->{$key};
         $result = true;
         if ($valueA instanceof \PhpParser\Node && $valueB instanceof \PhpParser\Node) {
             $result = self::isEqual($valueA, $valueB);
         } else {
             $result = $valueA === $valueB;
         }
         if (!$result) {
             return false;
         }
     }
     return true;
 }