add arrow function node

Author: TomasVotruba

rules-tests/TypeDeclaration/Rector/ClassMethod/ParamTypeByMethodCallTypeRector/Fixture/also_arrow_function.php.inc

@@ -0,0 +1,41 @@
+<?php
+
+namespace Rector\Tests\TypeDeclaration\Rector\ClassMethod\ParamTypeByMethodCallTypeRector\Fixture;
+
+use Rector\Tests\TypeDeclaration\Rector\ClassMethod\ParamTypeByMethodCallTypeRector\Source\SomeTypedService;
+
+final class AlsoArrowFunction
+{
+    public function __construct(
+        private SomeTypedService $someTypedService
+    ) {
+    }
+
+    public function go()
+    {
+        $closure = fn ($value) => $this->someTypedService->run($value);
+    }
+}
+
+?>
+-----
+<?php
+
+namespace Rector\Tests\TypeDeclaration\Rector\ClassMethod\ParamTypeByMethodCallTypeRector\Fixture;
+
+use Rector\Tests\TypeDeclaration\Rector\ClassMethod\ParamTypeByMethodCallTypeRector\Source\SomeTypedService;
+
+final class AlsoArrowFunction
+{
+    public function __construct(
+        private SomeTypedService $someTypedService
+    ) {
+    }
+
+    public function go()
+    {
+        $closure = fn (string $value) => $this->someTypedService->run($value);
+    }
+}
+
+?>