Fix vars exception, change cachedoc usage,

src/Appwrite/Utopia/Response/Model/Func.php

@@ -65,7 +65,7 @@ class Func extends Model
                 'type' => Response::MODEL_VARIABLE,
                 'description' => 'Function environment variables.',
                 'default' => [],
-                'example' => new \stdClass(),
+                'example' => [],
                 'array' => true
             ])
             ->addRule('events', [
@@ -121,25 +121,4 @@ class Func extends Model
     {
         return Response::MODEL_FUNCTION;
     }
-
-    /**
-     * Filter Function
-     *
-     * Automatically converts a [] default to a stdClass, this is called while grabbing the document.
-     *
-     * @param Document $document
-     * @return Document
-     */
-    public function filter(Document $document): Document
-    {
-        $vars = $document->getAttribute('vars');
-        if ($vars instanceof Document) {
-            $vars = $vars->getArrayCopy();
-        }
-
-        if (is_array($vars) && empty($vars)) {
-            $document->setAttribute('vars', new stdClass());
-        }
-        return $document;
-    }
 }