KeycloakSession session = keycloakRule.startSession();
try {
RealmManager manager = new RealmManager(session);
RealmModel adminRealm = manager.getRealm(Config.getAdminRealm());
ApplicationModel adminConsole = adminRealm.getApplicationByName(Constants.ADMIN_CONSOLE_APPLICATION);
TokenManager tm = new TokenManager();
UserModel admin = session.users().getUserByUsername("admin", adminRealm);
UserSessionModel userSession = session.sessions().createUserSession(adminRealm, admin, "admin", null, "form", false);
AccessToken token = tm.createClientAccessToken(tm.getAccess(null, adminConsole, admin), adminRealm, adminConsole, admin, userSession);
return tm.encodeToken(adminRealm, token);