Accessibility in XML view system

accessibility.xml

<Button
    android:id="@+id/confirm_button"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_marginHorizontal="@dimen/margin_medium"
    android:background="@drawable/primary_button"
    android:importantForAccessibility="yes"
    android:text="Confirm"
    android:contentDescription="Confirm button, double tap to confirm"/>