đã tạo được test case của createUser

vendor/php-webdriver/webdriver/lib/Internal/WebDriverLocatable.php

@@ -0,0 +1,16 @@
+<?php
+
+namespace Facebook\WebDriver\Internal;
+
+use Facebook\WebDriver\Interactions\Internal\WebDriverCoordinates;
+
+/**
+ * Interface representing basic mouse operations.
+ */
+interface WebDriverLocatable
+{
+    /**
+     * @return WebDriverCoordinates
+     */
+    public function getCoordinates();
+}