ultrasonic-app-subsonic-android/ultrasonic/src/main/res/drawable/menu_arrow.xml

<vector xmlns:android="http://schemas.android.com/apk/res/android"
    android:width="24dp"
    android:height="24dp"
    android:viewportWidth="24"
    android:viewportHeight="24">
  <path
      android:fillColor="#FFF"
      android:pathData="M8,12 L20,4v16z"/>
</vector>