Invokes the next operation.

import Batch = require("nativescript-batch");
import Frame = require("ui/frame");
import HTTP = require("http");

var userListView = Frame.topmost().getViewById('myUserList');

var b = Batch.newBatch(function(ctx) {
    // initialize async operations
});

for (var userId = 1; userId <= 100; userId++) {
    b.items.push(userId);
  
    b = b.then(function(ctx : Batch.IBatchOperationContext) {
        var uid = ctx.items.getItem(ctx.index - 1).toString();
      
        HTTP.request({
            url: 'https://example.com/api/users/' + uid,
            method: 'GET'
        }).then(function(response) {
                    // handle response
          
                    ctx.invokeNext();
                },
                function(error) {
                    // handle error
          
                    ctx.invokeNext();
                });
    }).setInvokeStrategy(Batch.InvokeStrategy.Manually);
}

b.start();