title: How to change "Category" in Oreo onwards notification?
body: <p>Below is the Settings screen of Facebook app. In my app it displays "Category", here it is "Kalis Martinez". I want to achieve that in my app.</p>
  
  <p><a href="https://i.stack.imgur.com/rQhUQ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/rQhUQ.png" alt="enter image description here"></a></p>
  
  <p>What my app is displaying is as below:</p>
  
  <p><a href="https://i.stack.imgur.com/4Bc4K.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/4Bc4K.png" alt="enter image description here"></a></p>
  
  <p><strong>What I am doing is as below.</strong></p>
  
  <pre><code>NotificationManager manager = (NotificationManager) 
  getSystemService(Context.NOTIFICATION_SERVICE);
          manager.createNotificationChannelGroup(new 
  NotificationChannelGroup(groupId, groupName));
  
  String GROUP_KEY_WORK_EMAIL = "com.android.example.WORK_EMAIL";
  
      Notification notification = new Notification.Builder(getApplicationContext(), SECONDARY_CHANNEL)
              .setContentTitle(title)
              .setContentText(body)
              //build summary info into InboxStyle template
              .setStyle(new Notification.InboxStyle()
                      .addLine("Alex Faarborg  Check this out")
                      .addLine("Jeff Chang    Launch Party")
                      .setBigContentTitle("2 new messages")
                      .setSummaryText("janedoe@example.com"))
              //specify which group this notification belongs to
              .setGroup(GROUP_KEY_WORK_EMAIL)
              //set this notification as the summary for the group
              .setGroupSummary(true)
              .setSmallIcon(getSmallIcon())
              .setAutoCancel(true);
  
  manager.notify(id, notification.build());
  </code></pre>
  
  <p><code>setGroup()</code> and <code>setGroupSummary()</code> do grouping while displaying notifications in System tray.</p>
  
  <p>How to change that label?</p>