From 1f1cf1620ab0e35991e61451512947380af6ad39 Mon Sep 17 00:00:00 2001
From: Martin Brecht-Precht <mb@markenwerk.net>
Date: Sat, 1 Dec 2018 13:32:32 +0100
Subject: [PATCH] Language level migration.

---
 src/Common/NodeInterface.php     | 2 +-
 src/Content/ContentInterface.php | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Common/NodeInterface.php b/src/Common/NodeInterface.php
index ebc4f26..383ca3b 100644
--- a/src/Common/NodeInterface.php
+++ b/src/Common/NodeInterface.php
@@ -20,7 +20,7 @@ interface NodeInterface
 	/**
 	 * @return int
 	 */
-	public function getIndex(): int;
+	public function getIndex(): ?int;
 
 	/**
 	 * @return string
diff --git a/src/Content/ContentInterface.php b/src/Content/ContentInterface.php
index 8fc59c7..ca8a3c3 100644
--- a/src/Content/ContentInterface.php
+++ b/src/Content/ContentInterface.php
@@ -53,6 +53,6 @@ public function onDetach();
 	/**
 	 * @param HandlerInterface $markdomHandler
 	 */
-	public function onHandle(HandlerInterface $markdomHandler);
+	public function onHandle(HandlerInterface $markdomHandler): void;
 
 }