THIS IS MAINLY USED FOR CALLING RESTLET:-
    
  define([ 'N/url'],function(obj_Url_Module){
  function sample(){
  
  var billLinkPath = obj_Url_Module.resolveScript({
                                scriptId: 'customscript_clb_sl_po_button_bill_opera',
                                deploymentId: 'customdeploy_clb_sl_po_button_bill_opera',
/*ALSO can use prams*/          parameters: {
                                    'i_Record_Id': s_internalid
                                },
                                returnExternalUrl: false
                            });
  }
}