Sets the (display) name of the current operation.
import Batch = require("nativescript-batch");
var b = Batch.newBatch(function(ctx) {
console.log("Name: " + ctx.name); // "Operation #1"
}).setName("Operation #1")
.then(function(ctx) {
console.log("Name: " + ctx.name); // "Operation #2"
}).setName("Operation #2");
b.start();