From ca9d93eee4d4a9e48dfeaabc3c14fee71a3fdc78 Mon Sep 17 00:00:00 2001
From: Grzegorz Sadowski <sadowskigp@gmail.com>
Date: Thu, 16 Sep 2021 09:10:05 +0200
Subject: [PATCH] [LineItem] Revert changing return type of invoice

---
 UPGRADE.md                       | 5 -----
 src/Entity/LineItem.php          | 4 ++--
 src/Entity/LineItemInterface.php | 2 +-
 3 files changed, 3 insertions(+), 8 deletions(-)

diff --git a/UPGRADE.md b/UPGRADE.md
index 0c9174d6..cc00476d 100644
--- a/UPGRADE.md
+++ b/UPGRADE.md
@@ -1,8 +1,3 @@
-### UPGRADE FROM 0.18.0 TO 0.19.0
-
-1. The return type of `Sylius\InvoicingPlugin\Entity\LineItemInterface:invoice` method has been changed
-   from `InvoiceInterface` to `?InvoiceInterface`
-
 ### UPGRADE FROM 0.17.0 TO 0.18.0
 
 1. The `Sylius\InvoicingPlugin\Converter\BillingDataConverter` has been removed in favor of `Sylius\InvoicingPlugin\Factory\BillingDataFactory->createFromAddress`.
diff --git a/src/Entity/LineItem.php b/src/Entity/LineItem.php
index e06c14c5..11ea3193 100644
--- a/src/Entity/LineItem.php
+++ b/src/Entity/LineItem.php
@@ -22,7 +22,7 @@ class LineItem implements LineItemInterface, ResourceInterface
     /** @var mixed */
     protected $id;
 
-    protected ?InvoiceInterface $invoice = null;
+    protected InvoiceInterface $invoice;
 
     protected string $name;
 
@@ -74,7 +74,7 @@ public function id()
         return $this->id;
     }
 
-    public function invoice(): ?InvoiceInterface
+    public function invoice(): InvoiceInterface
     {
         return $this->invoice;
     }
diff --git a/src/Entity/LineItemInterface.php b/src/Entity/LineItemInterface.php
index ca3ca5fb..4e586e1f 100644
--- a/src/Entity/LineItemInterface.php
+++ b/src/Entity/LineItemInterface.php
@@ -17,7 +17,7 @@ interface LineItemInterface
 {
     public function id();
 
-    public function invoice(): ?InvoiceInterface;
+    public function invoice(): InvoiceInterface;
 
     public function setInvoice(InvoiceInterface $invoice): void;