def METHOD_NAME():
    @strawberry.type
    class JsonThing:
        value: JSON
    @strawberry.type
    class StrThing:
        value: str
    SomeThing = Annotated[Union[JsonThing, StrThing], strawberry.union("SomeThing")]
    @strawberry.type()
    class Query:
        hello: SomeThing
    schema = strawberry.Schema(query=Query)
    graphql_schema: GraphQLSchema = schema._schema
    graphql_type = graphql_schema.get_type("SomeThing")
    assert graphql_type.extensions[DEFINITION_BACKREF].graphql_name == "SomeThing"
    assert graphql_type.extensions[DEFINITION_BACKREF].description is None