/**
  * This method is an alias of:
  * endpoint(Endpoints\UserEndpoint::class)
  *
  * @return mixed
  */
 public function user()
 {
     return parent::endpoint(Endpoints\UserEndpoint::class);
 }
<?php

// $ php BasicExample.php
require_once 'autoload.php';
use TwitterStreaming\Tracker;
$tracker = new Tracker();
$tracker->endpoint('user')->track(function ($tweet) {
    // Print the tweet object
    print_r($tweet);
});