- Defined sets() as chainable

src/Method/FormContext.php

@@ -147,11 +147,13 @@ class FormContext implements FormContextInterface
         return $this->formContextValues[$key] = $value;
     }
 
-    public function sets(array $values) : void
+    public function sets(array $values) : static
     {
         foreach($values as $key =>$value) {
             $this->set($key, $value);
         }
+
+        return $this;
     }