add missing method to contract

Author: Gummibeer

src/Translatable/Contracts/Translatable.php

@@ -17,6 +17,8 @@ public function translations(): HasMany;
 
     public function deleteTranslations($locales = null): void;
 
+    public function getDefaultLocale(): ?string;
+
     public function getNewTranslation(string $locale): Model;
 
     public function getTranslation(?string $locale = null, bool $withFallback = null): ?Model;

src/Translatable/Translatable.php

@@ -135,9 +135,6 @@ public function getAttribute($key)
         return parent::getAttribute($key);
     }
 
-    /**
-     * @internal will change to protected
-     */
     public function getDefaultLocale(): ?string
     {
         return $this->defaultLocale;