Question about the operation of the superset-websocket module

[saha23412]

I want to understand how the superset-websocket module works in the superset project, when creating a Websocket
in the file superset-frontend/src/middleware/AsyncEvent.ts uses the Websocket constructor and the new operator, as far as I understand, this is the usual Websocket Api provided by the Browser, as exactly the superset-websocket module helps in using these very Websockets, in the file https://github.com/apache/superset/blob/master/superset-websocket/src/index.ts#L144 A Websocket is being created, as far as I understand, it is not reused anywhere else, how does this module help the project and where is it used?