Separated laravel app to its own folder (#540)

api/app/Models/Traits/CachableAttributes.php

@@ -0,0 +1,34 @@
+<?php
+
+namespace App\Models\Traits;
+
+use Closure;
+
+interface CachableAttributes
+{
+    /**
+     * Get an item from the cache, or execute the given Closure and store the result.
+     *
+     *
+     * @return mixed
+     */
+    public function remember(string $key, ?int $ttl, Closure $callback);
+
+    /**
+     * Get an item from the cache, or execute the given Closure and store the result forever.
+     *
+     *
+     * @return mixed
+     */
+    public function rememberForever(string $key, Closure $callback);
+
+    /**
+     * Remove an item from the cache.
+     */
+    public function forget(string $key): bool;
+
+    /**
+     * Remove all items from the cache.
+     */
+    public function flush(): bool;
+}