ClassMetadataFactory - Compatibility with Doctrine ORM 3 and DBAL 4

Author: ondrejmirtes

src/Doctrine/Mapping/ClassMetadataFactory.php

@@ -59,7 +59,7 @@ protected function initialize(): void
 	 * @param class-string<T> $className
 	 * @return ClassMetadata<T>
 	 */
-	protected function newClassMetadataInstance($className)
+	protected function newClassMetadataInstance($className): ClassMetadata
 	{
 		return new ClassMetadata($className);
 	}