do not use app container in classes

src/Interfaces/PersistentData/IPersistentDataManager.php

@@ -0,0 +1,20 @@
+<?php namespace SokoWeb\Interfaces\PersistentData;
+
+use Generator;
+use SokoWeb\Database\Query\Select;
+use SokoWeb\PersistentData\Model\Model;
+
+interface IPersistentDataManager
+{
+    public function selectFromDb(Select $select, string $type, bool $useRelations = false, array $withRelations = []);
+
+    public function selectMultipleFromDb(Select $select, string $type, bool $useRelations = false, array $withRelations = []): Generator;
+
+    public function selectFromDbById($id, string $type, bool $useRelations = false);
+
+    public function loadRelationsFromDb(Model $model, bool $recursive): void;
+
+    public function saveToDb(Model $model): void;
+
+    public function deleteFromDb(Model $model): void;
+}