Move "exists" logic to builder

Author: ByScripts

src/StaticEntity.php

@@ -50,7 +50,7 @@ static public function get($identifier)
      */
     static public function exists($id)
     {
-        return in_array($id, self::getBuilder()->getIds(), true);
+        return self::getBuilder()->hasId($id);
     }
 
     /**

src/StaticEntityBuilder.php

@@ -82,6 +82,16 @@ public function getAll()
         return $this->instances;
     }
 
+    /**
+     * @param mixed $id
+     *
+     * @return bool
+     */
+    public function hasId($id)
+    {
+        return in_array($id, $this->ids, true);
+    }
+
     /**
      * @throws \Exception
      *