docs: public PreAuthenticatedGrantedAuthoritiesPortletAuthenticationDetails buildDetails(PortletRequest context) {
  
          Collection<? extends GrantedAuthority> userGas = buildGrantedAuthorities(context);
  
          PreAuthenticatedGrantedAuthoritiesPortletAuthenticationDetails result =
                  new PreAuthenticatedGrantedAuthoritiesPortletAuthenticationDetails(context, userGas);
  
          return result;
      }