Cannot Center a FAB Menu

[mrad4tech]

I am trying to center a fab menu but there is not such option available in gravity..how to do that

    <io.github.yavski.fabspeeddial.FabSpeedDial
        android:id="@+id/fab_speed_dial2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|end"
        app:fabGravity="bottom_end"
        app:fabDrawable="@drawable/ic_send_white_24dp"
        app:fabMenu="@menu/menu_copy"
        app:miniFabBackgroundTint="@android:color/white"
        app:miniFabDrawableTint="?attr/colorPrimaryDark"
        app:miniFabTitleTextColor="?attr/colorPrimaryDark" />