refactored code

Signed-off-by: Maurice Preuß (envoyr) <hello@envoyr.com>

src/Id/Concerns/ManagesCountries.php

@@ -0,0 +1,25 @@
+<?php
+
+namespace Anikeen\Id\Concerns;
+
+use Anikeen\Id\ApiOperations\Request;
+use Anikeen\Id\Exceptions\RequestRequiresClientIdException;
+use Anikeen\Id\Resources\Countries;
+use GuzzleHttp\Exception\GuzzleException;
+
+trait ManagesCountries
+{
+    use Request;
+
+    /**
+     * Get available countries for the current user.
+     *
+     * @throws RequestRequiresClientIdException
+     * @throws GuzzleException
+     */
+    public function countries(): Countries
+    {
+        return (new Countries($this->request('GET', 'v1/countries')))
+            ->setBillable($this);
+    }
+}