Refresh Token not Returned with authorization_code grant flow. (PKCE)

[rayman245]

Describe the bug
The refresh token isn't being returned. I tried to follow this guide (https://www.appsdeveloperblog.com/new-oauth2-authorization-server/)

Although I was not able to find in token settings a similar function like below

I could not find any documentation for this project anywhere, I know it worked in 0.0.3, but unsure if the behavior has changed now?

To Reproduce

1. Create a client with following settings using spring-authorization-server version 0.2.2
   RegisteredClient registeredClient = RegisteredClient.withId(UUID.randomUUID().toString()) .clientId("glassdev-postman-client-pkce") .clientAuthenticationMethod(ClientAuthenticationMethod.NONE) .authorizationGrantType(AuthorizationGrantType.AUTHORIZATION_CODE) .authorizationGrantType(AuthorizationGrantType.REFRESH_TOKEN) .redirectUri("https://oauth.pstmn.io/v1/callback") .scope(OidcScopes.OPENID) .build();

2. Complete authorization grant flow and request access token, should receive payload with access token and id token, but missing refresh token.

Expected behavior
Should return below:

1. access token
2. id token
3. refresh token

[rayman245]

Issue already highlighted here gh-297