docs: protected synchronized void installJAASConfigurationFromJAASConfigFile() {
          JAASLoginConfig jaasLoginConfig = jaasLoginConfigRef.getService();
          if (jaasLoginConfig != null) {
              jaasConfigurationEntriesFromJaasConfig = jaasLoginConfig.getEntries();
              if (jaasConfigurationEntriesFromJaasConfig != null) {
                  if (jaasSecurityConfiguration == null) {
                      jaasSecurityConfiguration = new JAASSecurityConfiguration();
                      Configuration.setConfiguration(jaasSecurityConfiguration);
                  }
                  jaasSecurityConfiguration.setAppConfigurationEntries(jaasConfigurationEntriesFromJaasConfig);
              }
          }
      }