Update RefResolver.php

Amazon JSON Schema for APPAREL apparently needs more than 400 nesting levels to resolve.  Code updated to make it easy to adjust the hardcoded nesting level of 200.

Author: loneregister

src/RefResolver.php

@@ -13,6 +13,7 @@ class RefResolver
     public $url;
     /** @var null|RefResolver */
     private $rootResolver;
+    private static int $MAX_DEEP_NESTING = 500; //Change this if you receive DEEP_NESTING exceptions
 
     /**
      * @param mixed $resolutionScope
@@ -224,7 +225,7 @@ public function resolveReference($referencePath)
      */
     public function preProcessReferences($data, Context $options, $nestingLevel = 0)
     {
-        if ($nestingLevel > 200) {
+        if ($nestingLevel > self::$MAX_DEEP_NESTING) { //Updated due to specific recursion depth from Amazon product JSON Schemas - yep 200 was not enough
             throw new Exception('Too deep nesting level', Exception::DEEP_NESTING);
         }
         if (is_array($data)) {
@@ -264,4 +265,4 @@ public function preProcessReferences($data, Context $options, $nestingLevel = 0)
     }
 
 
-}
+}