From 1dc21d8fb72719399057c38a190a4f26f67c6c7f Mon Sep 17 00:00:00 2001
From: Aldarien <aldarien85@gmail.com>
Date: Mon, 3 Aug 2020 23:54:07 -0400
Subject: [PATCH] FIX: Interface differences

---
 common/Alias/Model.php | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/common/Alias/Model.php b/common/Alias/Model.php
index 06476af..9df62dd 100644
--- a/common/Alias/Model.php
+++ b/common/Alias/Model.php
@@ -6,9 +6,9 @@ use ProVM\Common\Factory\Model as ModelFactory;
 interface Model {
   public function getTable(): string;
   public function setFactory(ModelFactory $factory): Model;
-  public function parentOf(string $child_model_class, array $relation_definitions): array;
-  public function childOf(string $parent_model_class, array $relation_definitions): Model;
-  public function siblingOf(string $sibling_model_class, string $connecting_table, array $relation_definitions): array;
+  public function parentOf(string $child_model_class, array $relation_definitions): ?array;
+  public function childOf(string $parent_model_class, array $relation_definitions): ?Model;
+  public function siblingOf(string $sibling_model_class, string $connecting_table, array $relation_definitions): ?array;
 
   public function toArray(): array;
 }