Relevant examples on CPVoiceControlTemplate on Car Play

We are developing a navigation app that supports car play as well. We have to use use CPVoiceControlTemplate but I haven't find any examples.

Is there any relevant documentation apart from this https://developer.apple.com/documentation/carplay/cpvoicecontroltemplate, which is not clearly explained

Relevant examples on CPVoiceControlTemplate on Car Play
 
 
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