<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto">
<item android:state_checked="true" android:drawable="@drawable/mtrl_ic_arrow_drop_up"/>
<item android:drawable="@drawable/mtrl_ic_arrow_drop_down"/>
</selector>
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