How to use the @loopback/authentication.AuthenticationBindings.AUTH_ACTION function in @loopback/authentication

// Set up the custom sequence
    this.sequence(MySequence);

    // Set up default home page
    this.static('/', path.join(__dirname, '../public'));

    // Customize @loopback/rest-explorer configuration here
    this.bind(RestExplorerBindings.CONFIG).to({
      path: '/explorer',
    });
    this.component(RestExplorerComponent);

    // this.component(AuthenticationComponent);
    this.bind(AuthenticationBindings.METADATA).toProvider(MyAuthMetadataProvider);
    this.bind(MyAuthBindings.STRATEGY).toProvider(MyAuthAuthenticationStrategyProvider);
    this.bind(AuthenticationBindings.AUTH_ACTION).toProvider(MyAuthActionProvider);

    this.projectRoot = __dirname;
    // Customize @loopback/boot Booter Conventions here
    this.bootOptions = {
      controllers: {
        // Customize ControllerBooter Conventions here
        dirs: ['controllers'],
        extensions: ['.controller.js'],
        nested: true,
      },
    };
  }

constructor(
        @inject(SequenceActions.FIND_ROUTE) protected findRoute: FindRoute,
        @inject(SequenceActions.PARSE_PARAMS)
        protected parseParams: ParseParams,
        @inject(SequenceActions.INVOKE_METHOD) protected invoke: InvokeMethod,
        @inject(SequenceActions.SEND) protected send: Send,
        @inject(SequenceActions.REJECT) protected reject: Reject,
        @inject(AuthenticationBindings.AUTH_ACTION)
        protected authenticateRequest: AuthenticateFn,
      ) {}

constructor(
        @inject(SequenceActions.FIND_ROUTE) protected findRoute: FindRoute,
        @inject(SequenceActions.PARSE_PARAMS)
        protected parseParams: ParseParams,
        @inject(SequenceActions.INVOKE_METHOD) protected invoke: InvokeMethod,
        @inject(SequenceActions.SEND) protected send: Send,
        @inject(SequenceActions.REJECT) protected reject: Reject,
        @inject(AuthenticationBindings.AUTH_ACTION)
        protected authenticateRequest: AuthenticateFn,
      ) {}

constructor(
    @inject(SequenceActions.FIND_ROUTE) protected findRoute: FindRoute,
    @inject(SequenceActions.PARSE_PARAMS) protected parseParams: ParseParams,
    @inject(SequenceActions.INVOKE_METHOD) protected invoke: InvokeMethod,
    @inject(SequenceActions.SEND) public send: Send,
    @inject(SequenceActions.REJECT) public reject: Reject,
    //add
    @inject(AuthenticationBindings.AUTH_ACTION)
    protected authenticateRequest: AuthenticateFn,
  ) {}

constructor(
    @inject(SequenceActions.FIND_ROUTE) protected findRoute: FindRoute,
    @inject(SequenceActions.PARSE_PARAMS)
    protected parseParams: ParseParams,
    @inject(SequenceActions.INVOKE_METHOD) protected invoke: InvokeMethod,
    @inject(SequenceActions.SEND) protected send: Send,
    @inject(SequenceActions.REJECT) protected reject: Reject,
    @inject(AuthenticationBindings.AUTH_ACTION)
    protected authenticateRequest: AuthenticateFn,
  ) {}