Fix. Iterator must have rewind method to used as state pattern.

Author: sokolovsky

composer.json

@@ -3,7 +3,7 @@
   "description": "Collections library for php language",
   "minimum-stability": "dev",
   "license": "MIT",
-  "version": "1.1.2",
+  "version": "1.1.3",
   "authors": [
     {
       "name": "Maxim Sokolovsky",

src/WS/Utils/Collections/CollectionFactory.php

@@ -101,13 +101,16 @@ public static function empty(): Collection
 
     private static function isStatePatternIterator(iterable $iterable): bool
     {
+        if (!is_object($iterable)) {
+            return false;
+        }
         $i = 2;
         $lastItem = null;
         foreach ($iterable as $item) {
             if ($i === 0) {
                 break;
             }
-            if (is_object($item) && $item === $lastItem) {
+            if (is_object($item) && $item === $lastItem && method_exists($item, 'rewind')) {
                 return true;
             }
             $lastItem = $item;