Signal-Android/app/src/main/res/navigation/pin_restore.xml

<?xml version="1.0" encoding="utf-8"?>
<navigation xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/signup"
    app:startDestination="@id/pinEntryFragment">

    <fragment
        android:id="@+id/pinEntryFragment"
        android:name="org.thoughtcrime.securesms.pin.PinRestoreEntryFragment"
        android:label="fragment_pin_entry"
        tools:layout="@layout/pin_restore_entry_fragment">

        <action
            android:id="@+id/action_accountLocked"
            app:destination="@id/pinLockedFragment"
            app:enterAnim="@anim/nav_default_enter_anim"
            app:exitAnim="@anim/nav_default_exit_anim"
            app:popUpTo="@id/signup"
            app:popUpToInclusive="true" />

    </fragment>

    <fragment
        android:id="@+id/pinLockedFragment"
        android:name="org.thoughtcrime.securesms.pin.PinRestoreLockedFragment"
        android:label="fragment_pin_locked"
        tools:layout="@layout/pin_restore_locked_fragment"/>

</navigation>