title: How to get instance in Kotlin with Context.getSystemService(Class)
body: <p>In Google Android Kotlin documentation, 
  Every now and then there is a below line present in android documentation that:
  <strong>Instances of this class must be obtained using Context.getSystemService(Class)</strong> </p>
  
  <p>For example:</p>
  
  <blockquote>
    <p>Instances of this class must be obtained using Context.getSystemService(Class) with the argument AppOpsManager.class or Context.getSystemService(String) with the argument Context.APP_OPS_SERVICE.</p>
  </blockquote>
  
  <p>Can someone please clarify what this is and how do I create a instance for class <code>AppOpsManager</code>.</p>
  
  <p>Usually we can create instance like:
  <code>val use = AppOpsManager()</code></p>
  
  <p>Please help and explain the above <code>Context.getSystemService()</code>.</p>
  
  <p>Thank You.</p>