BUI add-in get threads

Summary

Attempting to get the current threads from a workspace using a workspace extension.

Content

Hi, 

I'm attempting to use a workspace extension to search through thread information, but I can't seem to use the "Browser UI Extensibility Framework" to access the thread data.

I'm previewing the workspace in my browser in dev mode as described in (https://cloudcustomerconnect.oracle.com/posts/4a94f55fc7) and am using an html button to trigger the following javascript.

var appName = "PhoneMatching";
var appVersion = "1.0";

export const getThreadsFromIncident = () => {
    openThreadsContext();
}

async function openThreadsContext() {

    let sdk = await ORACLE_SERVICE_CLOUD.extension_loader.load(appName, appVersion);

    sdk.