Append query parametr to custom visual url

I need to append a query parameter to the url of my custom plugin to disable caching for Forge SVF2 file as suggested here:

"appending this query string parameter disableIndexedDb=true to your viewer app URL to see if it helps. e.g. http://localhost:3000?disableIndexedDb=true"

How do I do that with Node.JS based plugin?

Thanks