Android Manifest for programatically changing app icons

AndroidManifest.xml

<activity
    android:name="dev.katiebarnett.experiments.appicon.MainActivity"
    android:exported="true"
    android:theme="@style/Theme.Experiments">
    <intent-filter>
        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
</activity>
<activity-alias
    android:label="@string/app_name"
    android:icon="@mipmap/ic_launcher"
    android:name=".DEFAULT"
    android:enabled="true"
    android:exported="true"
    android:targetActivity=".MainActivity">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
</activity-alias>
<activity-alias
    android:label="@string/app_name_dark"
    android:icon="@mipmap/ic_launcher_dark"
    android:name=".DARK"
    android:exported="true"
    android:targetActivity=".MainActivity">
    <intent-filter>
        <action android:name="android.intent.action.MAIN" />
        <category android:name="android.intent.category.LAUNCHER" />
    </intent-filter>
</activity-alias>