You can achieve this by editing the code of the NavigationBar component.
It is open source on GitHub, and can be found here: https://github.com/iceteagroup/wisej-extensions/tree/3.2/Wisej.Web.Ext.NavigationBar
Specifically, you’ll want to edit the file NavigationBar.Designer.cs (https://github.com/iceteagroup/wisej-extensions/blob/3.2/Wisej.Web.Ext.NavigationBar/NavigationBar.Designer.cs).
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