[keycloak-user] Obtaining KeycloakSecurityContext in case of Desktop applications (KeycloakInstalled adapter)

How can I obtain KeycloakSecurityContext in case of Desktop applications (KeycloakInstalled adapter). I read the documentation for KeycloakSecurityContext https://www.keycloak.org/docs/3.3/authorization_services/topics/enforcer/... but it relies on servlet request. How can I obtain KeycloakSecurityContext if I am using keycloak to secure my desktop apps using keycloakinstalledadpater? I need it as my desktop apps interact with a server through RMI and I want to be able to do authorization on these calls.