Merge pull request api-platform#1546 from cedriclombardot/patch-4

Fix convertType signature

Author: vincentchalamon

core/graphql.md

@@ -1644,15 +1644,15 @@ final class TypeConverter implements TypeConverterInterface
     /**
      * {@inheritdoc}
      */
-    public function convertType(Type $type, bool $input, ?string $queryName, ?string $mutationName, string $resourceClass, string $rootResource, ?string $property, int $depth)
+    public function convertType(Type $type, bool $input, ?string $queryName, ?string $mutationName, ?string $subscriptionName, string $resourceClass, string $rootResource, ?string $property, int $depth)
     {
         if ('publicationDate' === $property
             && Book::class === $resourceClass
         ) {
             return 'DateTime';
         }
 
-        return $this->defaultTypeConverter->convertType($type, $input, $queryName, $mutationName, $resourceClass, $rootResource, $property, $depth);
+        return $this->defaultTypeConverter->convertType($type, $input, $queryName, $mutationName, $subscriptionName, $resourceClass, $rootResource, $property, $depth);
     }
 
     /**