Adds one or more items for the object in 'items' property.
import Batch = require("nativescript-batch");
var b = Batch.newBatch(function(ctx) {
console.log("Item #1 => " + ctx.items.getItem(0)); // 666
console.log("Item #2 => " + ctx.items.getItem(1)); // 77
});
b.addItems(666, 77);
b.start();