ref#184 checking if class implements Symfony\Component\Form\FormTypeInterface instead of checking the classname to determinate if the class is a form

Author: Guillaume Chehami

src/Visitor/Php/Symfony/FormTrait.php

@@ -23,9 +23,12 @@ trait FormTrait
      */
     private function isFormType(Node $node): bool
     {
-        // only Traverse *Type
+        // isFormType true if it implements FormTypeInterface
         if ($node instanceof Stmt\Class_) {
-            $this->isFormType = 'Type' === substr($node->name, -4);
+            $this->isFormType = in_array(
+                'Symfony\Component\Form\FormTypeInterface',
+                array_map(fn($interface) => $interface->toString(), $node->implements ?? [])
+            );
         }
 
         return $this->isFormType;