Get Sublist Data in Suitelet

Today I wanted to create first 2.0 Suitelet, but I couldn't find any simple and easy way to get sublist data from sublist which was created as a part of Suitelet form. Of course you have context.request.parameters.sublistdata where all the data are stored after page submit, but you need to manually split it. I thought that maybe I'm missing something, but actually this is the part of an example from Netsuite help:

var delimiter = /\u0001/;
var textField = context.request.parameters.textfield;
var dateField = context.request.parameters.datefield;
var currencyField = context.request.parameters.currencyfield;
var selectField = context.request.parameters.selectfield;