@@ -83,9 +83,9 @@ passwordParamSchema = mempty
8383-- data Direction = Up | Down
8484--
8585-- instance ToParamSchema Direction where
86−-- toParamSchema = mempty
86+-- toParamSchema _ = mempty
8787-- & type_ .~ SwaggerString
88−-- & enum_ .~ [ \"Up\", \"Down\" ]
88+-- & enum_ .~ (Just [ \"Up\", \"Down\" ])
8989-- @
9090--
9191-- Instead of manually writing your @'ToParamSchema'@ instance you can