Accept Null as a return type

jls-esokia · jls-esokia · commit 36a9ea784766 · 2019-06-24T16:34:46.000+04:00
diff --git a/src/Symfony/Component/Debug/ExceptionHandler.php b/src/Symfony/Component/Debug/ExceptionHandler.php
@@ -99,7 +99,7 @@ public function setHandler(callable $handler = null): ?callable
      *
      * @return string The previous file link format
      */
-    public function setFileLinkFormat($fileLinkFormat): string
+    public function setFileLinkFormat($fileLinkFormat): ?string
     {
         $old = $this->fileLinkFormat;
         $this->fileLinkFormat = $fileLinkFormat;

Original file line number	Diff line number	Diff line change
`@@ -99,7 +99,7 @@ public function setHandler(callable $handler = null): ?callable`
`99`	`99`	`*`
`100`	`100`	`* @return string The previous file link format`
`101`	`101`	`*/`
`102`		`- public function setFileLinkFormat($fileLinkFormat): string`
	`102`	`+ public function setFileLinkFormat($fileLinkFormat): ?string`
`103`	`103`	`{`
`104`	`104`	`$old = $this->fileLinkFormat;`
`105`	`105`	`$this->fileLinkFormat = $fileLinkFormat;`