twig : getMerchantCurrentSlug()

Twig/StoreTwigExtension.php

                 new TwigFunction('cart_current', [$this, 'getCartCurrent']),
                 new TwigFunction('cart_current_visited', [$this, 'getCartCurrentVisited']),
                 new TwigFunction('merchant_current', [$this, 'getMerchantCurrent']),
+                new TwigFunction('merchant_current_slug', [$this, 'getMerchantCurrentSlug']),
                 new TwigFunction('user_merchant_current', [$this, 'getUserMerchantCurrent']),
                 new TwigFunction('section_current', [$this, 'getSectionCurrent']),
                 new TwigFunction('section_default', [$this, 'getSectionDefault']),
         return $this->merchantResolver->getCurrent();
     }
 
+    public function getMerchantCurrentSlug(): string
+    {
+        return $this->merchantResolver->getCurrent()->getSlug();
+    }
+
     public function getUserMerchantCurrent(): ?UserMerchantInterface
     {
         return $this->merchantResolver->getUserMerchant();