title: Appium Espresso backdoor
body: <p>I use Espresso to call the method </p>
  
  <p>AndroidDriver androidDriver = this.powerWebDriver().getAndroidWebDriver();
  "androidDriver.executeScript("mobile: backdoor", scriptArgss);"</p>
  
  <p>and I got this error:</p>
  
  <pre><code>org.openqa.selenium.UnsupportedCommandException: Unknown mobile command "backdoor". Only shell,scrollBackTo,viewportScreenshot,deepLink,startLogsBroadcast,stopLogsBroadcast,acceptAlert,dismissAlert,batteryInfo,deviceInfo,changePermissions,getPermissions,performEditorAction commands are supported.
  </code></pre>
  
  <p>Any idea what I am doing wrong?</p>