Missing stylable field MvxExpandableListView_GroupItemTemplate

I've noticed the following MvxBind info message being output to logcat while debugging on Android:

Missing stylable field MvxExpandableListView_GroupItemTemplate

I've tried adding the MvxBindingAttributes.xml file from GitHub to the DroidProject\Resources\values folder and set the Build Action to AndroidResource. This causes a compiler error for each <declare-stylable> XML tag like:

Attribute "XXX" has already been defined

It's interesting because it claims MvxGroupItemTemplate is already defined when I compile, yet when I run the program a message is displayed saying it's missing.

What should I do to fix this?