add apikey

http-api/cognito.py

@@ -1,8 +1,11 @@
+class UserNotFound(Exception): ...
+
+
 def get_user(access_token: str, *, idp_client) -> dict | None:
     """Gets the user attributes and metadata for a user."""
     try:
         user = idp_client.get_user(AccessToken=access_token)
     except idp_client.exceptions.ClientError:
-        return None
+        raise UserNotFound()
     else:
         return {attr['Name']: attr['Value'] for attr in user['UserAttributes']}