code: protected static void setUpAndStartBuilderServer(LibertyServer server, String configFile, boolean jwtEnabled) throws Exception {
          bootstrapUtils.writeBootstrapProperty(server, "oidcJWKEnabled", String.valueOf(jwtEnabled));
          serverTracker.addServer(server);
          server.startServerUsingExpandedConfiguration(configFile);
          SecurityFatHttpUtils.saveServerPorts(server, MpJwtFatConstants.BVT_SERVER_2_PORT_NAME_ROOT);
      }
docs: Startup a Liberty Server with the JWT Builder enabled
  
  @param server - the server to startup
  @param configFile - the config file to use when starting the serever
  @param jwtEnabled - flag indicating if jwt should be enabled (used to set a bootstrap property that the config will use)
  @throws Exception