How to use the node-opcua-service-secure-channel.CloseSecureChannelResponse function in node-opcua-service-secure-channel

import { ActivateSessionResponse, CreateSessionResponse } from "node-opcua-service-session";
import { AcknowledgeMessage } from "node-opcua-transport";
import { DirectTransport } from "node-opcua-transport/dist/test_helpers";
import * as _ from "underscore";

const debugLog = make_debugLog(__filename);

export const fakeAcknowledgeMessage = new AcknowledgeMessage({
    maxChunkCount: 600000,
    maxMessageSize: 100000,
    protocolVersion: 0,
    receiveBufferSize: 8192,
    sendBufferSize: 8192,
});

export const fakeCloseSecureChannelResponse = new CloseSecureChannelResponse({});

export const fakeOpenSecureChannelResponse = new OpenSecureChannelResponse({
    serverProtocolVersion: 0,

    securityToken: {
        channelId: 23,
        createdAt: new Date(), // now
        revisedLifetime: 30000,
        tokenId: 1,
    },
    serverNonce: Buffer.from("qwerty")
});

export const fakeGetEndpointsResponse = new GetEndpointsResponse({
    endpoints: [
        {