From cd8655b1a0863275d5c435d7f299bef4d0e98730 Mon Sep 17 00:00:00 2001
From: Olivier Delalleau <507137+odelalleau@users.noreply.github.com>
Date: Thu, 4 Mar 2021 22:18:39 -0500
Subject: [PATCH] Update function signature

---
 omegaconf/nodes.py | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/omegaconf/nodes.py b/omegaconf/nodes.py
index c94ad2c6f..a68af557a 100644
--- a/omegaconf/nodes.py
+++ b/omegaconf/nodes.py
@@ -341,9 +341,7 @@ def _validate_and_convert_impl(self, value: Any) -> Optional[Enum]:
         return self.validate_and_convert_to_enum(enum_type=self.enum_type, value=value)
 
     @staticmethod
-    def validate_and_convert_to_enum(
-        enum_type: Type[Enum], value: Any
-    ) -> Optional[Enum]:
+    def validate_and_convert_to_enum(enum_type: Type[Enum], value: Any) -> Enum:
         if not isinstance(value, (str, int)) and not isinstance(value, enum_type):
             raise ValidationError(
                 f"Value $VALUE ($VALUE_TYPE) is not a valid input for {enum_type}"