Best practices:input system handle button touch/tap and then mark InputEventPtr has handled?

I am working on a project that uses touch events and button touches on mobile devices.

There are some buttons in the UI that are floating above a tile map in a scene. We have an OnFingerUp event handler for touch events. When a button touch is released or up, a finger up event is propagating to the handler. We want to get touch events when a touch is ended over a tile in the tile map etc.

Code (CSharp):

1.             // Register callback for on finger up event
2.             Touch.onFingerUp += OnFingerUp;

This is what I am trying to work out the best way to handle:

- user touches and releases a UI button
- somehow mark input event as being handled
- event is not propagated to OnFingerUp handler

I saw this code snippet in the Input system documentation:

Code (CSharp):

1. InputSystem.onEvent +=
2.         (eventPtr, device) =>
3.         {
4.             // Can handle events yourself, for example, and then stop them
5.             // from further processing by marking them as handled.
6.             eventPtr.handled = true;
7.         };
8.  

Is this what I should be using and how I catch button touch events in this handler? I have been scouring the documentation for more info .