How to use the bespoken-tools.BSTProxy.lambda function in bespoken-tools

const handler = extractHandlerObject(
        this.functionsFromServerlessConfig,
        this.selectedFunctionFromCommandLine
      );
      this.serverless.cli.log(
        `Server configured in single function mode.Requests will resolve via: ${
        handler.file
        }: ${handler.exportedFunction}`
      );
      this.proxy = BSTProxy.lambda(handler.file, handler.exportedFunction);
    } else {
      this.serverless.cli.log(
        "Server configured with passthru routing.  Url of requests will be interpreted as serverless handler specifications and dispatched to lambda function based on filesystem path."
      );
      // run local server in 'directory mode' -- requests are dispatched to appropriate lambda by mapping url to filesystem path
      this.proxy = BSTProxy.lambda();
    }

    // enable secure mode if enabled
    if (this.enableSecurity) {
      this.proxy.activateSecurity();
    }

    // start the lambda proxy
    this.proxy.start(async () => {
      // HACK: reach into proxy and grab the moduleManager instance
      const moduleManager = (this.proxy as any).lambdaServer
        .moduleManager as ModuleManager;

      // stop watching with watcher that uses node's fs.watch and use chokidar instead to allow for recursive symlink traversal
      (moduleManager as any).watcher.close();

);

    // create the lambda proxy
    if (this.withPassThruRoutingOption == null) {
      // run local server in 'single function mode' -- all requests are dispatched to a single lambda specified either on command line or
      // by choosing first function from serverless config ...
      const handler = extractHandlerObject(
        this.functionsFromServerlessConfig,
        this.selectedFunctionFromCommandLine
      );
      this.serverless.cli.log(
        `Server configured in single function mode.Requests will resolve via: ${
        handler.file
        }: ${handler.exportedFunction}`
      );
      this.proxy = BSTProxy.lambda(handler.file, handler.exportedFunction);
    } else {
      this.serverless.cli.log(
        "Server configured with passthru routing.  Url of requests will be interpreted as serverless handler specifications and dispatched to lambda function based on filesystem path."
      );
      // run local server in 'directory mode' -- requests are dispatched to appropriate lambda by mapping url to filesystem path
      this.proxy = BSTProxy.lambda();
    }

    // enable secure mode if enabled
    if (this.enableSecurity) {
      this.proxy.activateSecurity();
    }

    // start the lambda proxy
    this.proxy.start(async () => {
      // HACK: reach into proxy and grab the moduleManager instance