diff --git a/src/parser/aast/api/AASTNode.php b/src/parser/aast/api/AASTNode.php
--- a/src/parser/aast/api/AASTNode.php
+++ b/src/parser/aast/api/AASTNode.php
@@ -15,6 +15,7 @@
   private $nextSibling = null;
 
   private $selectCache;
+  private $tokenCache;
 
   abstract public function isStaticScalar();
   abstract public function getDocblockToken();