Hello,

So I'm looking to migrate Zendesk to Messaging.

I'm using the latest library: com.zendesk:messaging:5.3.0

The class `AlmostRealProgressBar` is missing from that SDK though so I can't override `zui_layout_navbar`

As you can see from the screenshot, for that library there's no package `zendesk.commonui` it's only `zendesk.classic.messaging`

As it's working fine without overriding that XML file, I guess you're importing another library which isn't accessible.

```

/ZuiLayoutNavbarBinding.java:18: error: package zendesk.commonui does not exist
import zendesk.commonui.AlmostRealProgressBar;

```

Would it be possible to move that class either to the SDK or move it to the classic widget? 

Thank you.