How to exclude resources from android shrinkResources?

Question

How can I exclude all /res/raw/*.wav files from shrinking?

buildTypes {
    release {
        shrinkResources true
        minifyEnabled true
    }
}

Answer 1

/res/raw/keep.xml :

<?xml version="1.0" encoding="utf-8"?>
<resources xmlns:tools="http://schemas.android.com/tools"
           tools:keep="*.wav"/>

Answer 2

Had a similar issue with two wav files - bell.wav and beep.wav in the res/raw/ folder. membersounds's answer above pointed the right direction, but did not solve the issue - this is the /res/raw/keep.xml that worked:

<?xml version="1.0" encoding="utf-8"?>
<resources xmlns:tools="http://schemas.android.com/tools"
           tools:keep="@raw/bell,@raw/beep"/>