title: Appium error while instantiating the object
body: <p>This is a BeforeClass that I was creating (Java, Appium, TestNG)</p>
  
  <p>private AndroidDriver driver;</p>
  
  <pre><code>@BeforeClass
  public void setUp() throws MalformedURLException{
      DesiredCapabilities desiredCapabilities = new DesiredCapabilities();
      desiredCapabilities.setCapability(MobileCapabilityType.APPIUM_VERSION, "1.7.1");
      desiredCapabilities.setCapability(MobileCapabilityType.PLATFORM_NAME,"Android");
      desiredCapabilities.setCapability("deviceName", "9NLJA17619012618");
      desiredCapabilities.setCapability("appActivity", ".activity.LaunchActivity");
      desiredCapabilities.setCapability("appPackage", "com.aaa.app");     
      desiredCapabilities.setCapability("platformVersion", "7.1.2");
      URL url = new URL("http://localhost:4723/wd/hub");
      driver = new AndroidDriver(url,desiredCapabilities);
  }
  </code></pre>
  
  <p>(I know there is a mix of MobileCapabilityType and others without that format, but that i not the point I think)</p>
  
  <p>And then a bunch of @Test</p>
  
  <p>This error appeared: </p>
  
  <pre><code>Failed tests:   setUp(tests.TestShop): 
  class io.appium.java_client.android.AndroidDriver has interface io.appium.java_client.AppiumDriver as super class
  </code></pre>
  
  <p>Any Clue?</p>