extensions/simple-browser/src/simpleBrowserManager.ts/SimpleBrowserManager/show
class SimpleBrowserManager:	public show(url: string, options?: ShowOptions): void {
		if (this._activeView) {
			this._activeView.show(url, options);
		} else {
			const view = new SimpleBrowserView(this.extensionUri, url, options);
			view.onDispose(() => {
				if (this._activeView === view) {
					this._activeView = undefined;
				}
			});

			this._activeView = view;
		}
	}