first change

Modules/Admin/app/Repositories/DepartmentInterface.php

@@ -0,0 +1,13 @@
+<?php
+
+namespace Modules\Admin\Repositories;
+
+interface DepartmentInterface
+{
+    public function pluck();
+    public function findAll();
+    public function getDepartmentById($departmentId);
+    public function delete($departmentId);
+    public function create(array $departmentDetails);
+    public function update($departmentId, array $newDetails);
+}