- Added documentation, fixed some bugs and optimized some parts of the source code while doing the doc.

src/Method/FormInterface.php

@@ -8,5 +8,5 @@ interface FormInterface
 
     public function validate(FormContextInterface $context) : bool;
     
-    public function execute(FormContextInterface $context) /* : mixed */;
+    public function execute(FormContextInterface $context);
 }