[keycloak-user] Obtaining RPT with Keycloak installed

I am using keycloak installed through which I can obtain access token. like this: *keycloakinstalled.loginDesktop();* *AccessToken token = keycloak.getToken();* But how can I obtain RPT (Requesting Party Token) in case of keycloakinstalled? I have followed the doc: https://www.keycloak.org/docs/4.3/authorization_services/#obtaining-user-... which gives a way to request RPT by using AuthzClient. But how can it be done if I am using keycloakinstalled? Also by decoding the RPT and accessToken I can see that RPT has authorization & permissions info which Access Token does not have: "authorization": { "permissions": [..... In summary, I have 2 questions: 1. Which one (Access token or RPT) should be used if I want to use authorization in my client application? What is the exact difference in terms of usage between the two? 2. How can the RPT be obtained in case of Keycloak installed?