Hi Laxman;
Please check what is the SAP ui5 library version.
when the application is running you can use the "Ctrl-Alt-Shift-P" or "Ctrl-Alt-Shift-S" shortcut (unless it is disabled) or type "sap.ui.version" into the browser's developer console.
Also check if there are any errors in browser's developer console.
As per the help document it is available since 1.22.
Regards,
Sarbjeet Singh