adjust AssignTrait to fit x2ts 2.3.0

composer.json

@@ -10,6 +10,7 @@
     }
   ],
   "require": {
+    "x2ts/x2ts": "^2.3.0",
     "x2ts/x2ts-rpc": "^2.1.2"
   },
   "autoload": {

src/traits/AssignTrait.php

@@ -10,7 +10,12 @@ namespace neoteched\rpc\traits;
 
 
 trait AssignTrait {
-    public function assign(array $array) {
+    /**
+     * @param array|\Traversable $array
+     *
+     * @return $this
+     */
+    public function assign($array) {
         foreach ($array as $key => $value) {
             if (property_exists($this, $key)) {
                 $this->$key = $value;