fixing missed step

app/Http/Controllers/ProductController.php

@@ -1,5 +1,7 @@
 <?php
 
+declare(strict_types = 1);
+
 namespace App\Http\Controllers;
 
 use App\Services\ProductService;
@@ -10,33 +12,62 @@ class ProductController extends Controller
 
     private $productService;
 
+    /**
+     * ProductController constructor.
+     *
+     * @param \App\Services\ProductService $productService
+     */
     public function __construct(ProductService $productService)
     {
         $this->productService = $productService;
     }
 
+    /**
+     * @return mixed
+     */
     public function index()
     {
         return $this->successResponse($this->productService->fetchProducts());
     }
 
+    /**
+     * @param $product
+     *
+     * @return mixed
+     */
     public function show($product)
     {
         return $this->successResponse($this->productService->fetchProduct($product));
     }
 
+    /**
+     * @param \Illuminate\Http\Request $request
+     *
+     * @return mixed
+     */
     public function store(Request $request)
     {
         return $this->successResponse($this->productService->createProduct($request->all()));
     }
 
+    /**
+     * @param \Illuminate\Http\Request $request
+     * @param                          $product
+     *
+     * @return mixed
+     */
     public function update(Request $request, $product)
     {
         return $this->successResponse($this->productService->updateProduct($product, $request->all()));
     }
 
+    /**
+     * @param $product
+     *
+     * @return mixed
+     */
     public function destroy($product)
     {
         return $this->successResponse($this->productService->deleteProduct($product));
     }
-}
+}