Fix merge

nicolas-grekas · nicolas-grekas · commit a2ded28a8d5c · 2021-01-25T15:22:12.000+01:00
diff --git a/src/Symfony/Component/DependencyInjection/Loader/YamlFileLoader.php b/src/Symfony/Component/DependencyInjection/Loader/YamlFileLoader.php
@@ -356,7 +356,7 @@ private function parseDefinition(string $id, $service, string $file, array $defa
             $stack = [];
 
             foreach ($service['stack'] as $k => $frame) {
-                if (\is_array($frame) && 1 === \count($frame) && !isset(self::$serviceKeywords[key($frame)])) {
+                if (\is_array($frame) && 1 === \count($frame) && !isset(self::SERVICE_KEYWORDS[key($frame)])) {
                     $frame = [
                         'class' => key($frame),
                         'arguments' => current($frame),
