From 7d89ba82dc801b92cb082692f04232c4158b9b00 Mon Sep 17 00:00:00 2001
From: Tim van Dijen <tvdijen@gmail.com>
Date: Tue, 13 Sep 2022 14:03:28 +0200
Subject: [PATCH] Fix incorrect method call

---
 src/SimpleSAML/XML/Signer.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/SimpleSAML/XML/Signer.php b/src/SimpleSAML/XML/Signer.php
index 44844f14d..38988980e 100644
--- a/src/SimpleSAML/XML/Signer.php
+++ b/src/SimpleSAML/XML/Signer.php
@@ -256,7 +256,7 @@ class Signer
      */
     public function sign(DOMElement $node, DOMElement $insertInto, $insertBefore = null): void
     {
-        Assert::nullOrInstanceOfAny($insertBefore, [DOMElement::class, DOMComment::class, DOMText::class]);
+        Assert::nullOrIsInstanceOfAny($insertBefore, [DOMElement::class, DOMComment::class, DOMText::class]);
 
         $privateKey = $this->privateKey;
         if ($privateKey === false) {
-- 
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