From e13701d2a77b3e6e132c60486ab248179abb5209 Mon Sep 17 00:00:00 2001
From: Alexander Tikhonov <fatal1ty.rnd@gmail.com>
Date: Sat, 23 Nov 2024 19:23:49 +0300
Subject: [PATCH] Change new Union syntax to the old one

---
 mashumaro/core/meta/types/unpack.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/mashumaro/core/meta/types/unpack.py b/mashumaro/core/meta/types/unpack.py
index f783d6a..b04f6b2 100644
--- a/mashumaro/core/meta/types/unpack.py
+++ b/mashumaro/core/meta/types/unpack.py
@@ -162,7 +162,7 @@ def _get_call_expr(self, spec: ValueSpec, method_name: str) -> str:
 class UnionUnpackerBuilder(AbstractUnpackerBuilder):
     def __init__(self, args: tuple[type, ...]):
         self.union_args = args
-        self.method_name: str | None = None
+        self.method_name: Optional[str] = None
 
     def get_method_prefix(self) -> str:
         return "union"