create FormErrorIterator stub

Author: rgrassian

extension.neon

@@ -26,6 +26,8 @@ parameters:
 		- stubs/Symfony/Component/EventDispatcher/GenericEvent.stub
 		- stubs/Symfony/Component/Form/DataTransformerInterface.stub
 		- stubs/Symfony/Component/Form/FormBuilderInterface.stub
+		- stubs/Symfony/Component/Form/FormError.stub
+		- stubs/Symfony/Component/Form/FormErrorIterator.stub
 		- stubs/Symfony/Component/Form/FormInterface.stub
 		- stubs/Symfony/Component/Form/FormTypeExtensionInterface.stub
 		- stubs/Symfony/Component/Form/FormTypeInterface.stub

stubs/Symfony/Component/Form/FormError.stub

@@ -0,0 +1,7 @@
+<?php
+
+namespace Symfony\Component\Form;
+
+class FormError
+{
+}

stubs/Symfony/Component/Form/FormErrorIterator.stub

@@ -0,0 +1,27 @@
+<?php
+
+namespace Symfony\Component\Form;
+
+/**
+ * @template T of FormError|FormErrorIterator
+ * @phpstan-implements \ArrayAccess<int, T>
+ * @phpstan-implements \RecursiveIterator<int, T>
+ * @phpstan-implements \SeekableIterator<int, T>
+ */
+class FormErrorIterator implements \RecursiveIterator, \SeekableIterator, \ArrayAccess, \Countable
+{
+    /**
+     * @param array<T> $errors
+     */
+    public function __construct(FormInterface $form, array $errors);
+
+    /** @return T */
+    public function current();
+
+    /**
+     * @param mixed $position
+     *
+     * @return T
+     */
+    public function offsetGet($position);
+}