these two lines should delete, or it will compile error: https://github.com/HenJigg/MaterialDesignInPrism/blob/c2794d561d3cadd5a0f3b8594aa1d0d25dda4874/src/MaterialDesignInPrism.Full/MaterialDesignInPrism.DeskTop/App.xaml.cs#L25-L26
