Skylight example XAML code

MainPage.xaml

<Page x:Class="TestApp.MainPage"
      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
      xmlns:actions="using:Skylight.Messaging.Behaviors.Actions"
      xmlns:behaviors="using:Skylight.Messaging.Behaviors"
      xmlns:comb="using:Skylight.Common.Behaviors"
      xmlns:core="using:Microsoft.Xaml.Interactions.Core"
      xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
      xmlns:i="using:Microsoft.Xaml.Interactivity"
      xmlns:local="using:TestApp"
      xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
      xmlns:viewModels="using:TestApp.ViewModels"
      Background="{ThemeResource ApplicationPageBackgroundThemeBrush}"
      mc:Ignorable="d">
    <Page.DataContext>
        <viewModels:MainPageViewModel />
    </Page.DataContext>
    <i:Interaction.Behaviors>
        <comb:NavigationHelperBehavior StateProvider="{Binding}" />
        <core:EventTriggerBehavior EventName="Loaded">
            <core:CallMethodAction MethodName="Loaded" TargetObject="{Binding}" />
        </core:EventTriggerBehavior>
        <behaviors:MessageTriggerBehavior Messenger="{Binding Messenger}">
            <actions:MessageDialogAction />
        </behaviors:MessageTriggerBehavior>
        <behaviors:MessageTriggerBehavior Messenger="{Binding Messenger}">
            <actions:NavigationAction />
        </behaviors:MessageTriggerBehavior>
    </i:Interaction.Behaviors>
    <Grid>
        <TextBlock HorizontalAlignment="Center"
                   VerticalAlignment="Center"
                   Text="Hello!" />
    </Grid>
    <Page.BottomAppBar>
        <CommandBar>
            <AppBarButton Label="TEST" Visibility="{Binding IsButtonEnabled, Converter={StaticResource BooleanToVisibilityConverter}}">
                <i:Interaction.Behaviors>
                    <core:EventTriggerBehavior EventName="Click">
                        <core:CallMethodAction MethodName="ButtonClicked" TargetObject="{Binding}" />
                    </core:EventTriggerBehavior>
                </i:Interaction.Behaviors>
            </AppBarButton>
            <AppBarButton Label="AUTH" Visibility="{Binding IsButtonEnabled, Converter={StaticResource BooleanToVisibilityConverter}}">
                <i:Interaction.Behaviors>
                    <core:EventTriggerBehavior EventName="Click">
                        <core:CallMethodAction MethodName="BeginAuth" TargetObject="{Binding}" />
                    </core:EventTriggerBehavior>
                </i:Interaction.Behaviors>
            </AppBarButton>
        </CommandBar>
    </Page.BottomAppBar>
</Page>