Hi Kishore,
This is a legacy API, Please do refer the below link for more information, it also has example :
https://developer.servicenow.com/app.do#!/api_doc?v=jakarta&type=server&scoped=false&to=method_class__unscoped_getglideobject___glideelement__geneva&id=r_GlideElement-getGlideObject
Please do mark it as helpful if this answers your question.
Regards,
Swathi
