Avalonia/samples/Generators.Sandbox/Views/SignUpView.xaml

<Window xmlns="https://github.com/avaloniaui"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:controls="using:Generators.Sandbox.Controls"
        x:Class="Generators.Sandbox.Views.SignUpView">
    <StackPanel Margin="10">
        <TextBlock Text="Sign Up" />
        <controls:SignUpView x:Name="SignUpControl" />
    </StackPanel>
</Window>