isOverviewExtended() {
			const oUriParams = new URLSearchParams(window.location.search);
			const sMode = oUriParams.get("sap-ui-xx-app-variant-overview-extended");
			if (!sMode) {
				return false;
			}

			return sMode.toLowerCase() === "true";
		}
@returns {boolean} Boolean value
@description The app variant overview is modified to be shown for SAP developer and a key user.
The calculation of which control (a button or a drop down menu button) should be shown on the UI is done here.
This calculation is done with the help of a query parameter <code>sap-ui-xx-app-variant-overview-extended</code>.
When this method returns <code>true</code> then a drop down menu button on the UI is shown where a user can choose app variant overview for either a key user or SAP developer.
When this method returns <code>false</code>, an app variant overview is shown only for a key user.