Piping Value Converters in WPF

<Window x:Class="PipedConverters.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="clr-namespace:PipedConverters" 
    Title="PipedConverters" Height="300" Width="300"
    FontSize="18"
    >
  <Window.Resources>
    <!-- Loads the Tasks XML data. -->
    <XmlDataProvider x:Key="xmlData" Source="..\..\data.xml" XPath="Tasks/Task" />

    <!-- Converts the Status attribute text to the display name for that processing state. -->
    <local:ValueConverterGroup x:Key="statusDisplayNameGroup">
      <local:IntegerStringToProcessingStateConverter  />
      <local:EnumToDisplayNameConverter />
    </local:ValueConverterGroup>

    <!-- Converts the Status attribute text to a SolidColorBrush used to draw 
         the output of statusDisplayNameGroup. -->
    <local:ValueConverterGroup x:Key="statusForegroundGroup">
      <local:IntegerStringToProcessingStateConverter  />
      <local:ProcessingStateToColorConverter />
      <local:ColorToSolidColorBrushConverter />
    </local:ValueConverterGroup>

    <!-- Converts the Status attribute to the tooltip message for that processing state. -->
    <local:ValueConverterGroup x:Key="statusDescriptionGroup">
      <local:XmlAttributeToStringStateConverter />
      <local:IntegerStringToProcessingStateConverter  />
      <local:EnumToDescriptionConverter />
    </local:ValueConverterGroup>    

    <DataTemplate x:Key="taskItemTemplate">
      <StackPanel 
        Margin="2" 
        Orientation="Horizontal" 
        ToolTip="{Binding XPath=@Status, Converter={StaticResource statusDescriptionGroup}}"
        >
        <TextBlock Text="{Binding XPath=@Name}" />
        <TextBlock Text="   (" xml:space="preserve" />
        <TextBlock 
          Text="{Binding XPath=@Status, Converter={StaticResource statusDisplayNameGroup}}" 
          Foreground="{Binding XPath=@Status, Converter={StaticResource statusForegroundGroup}}" />
        <TextBlock Text=")" />
      </StackPanel>
    </DataTemplate>
  </Window.Resources>

  <Grid >
    <Grid.RowDefinitions>
      <RowDefinition Height="Auto" />
      <RowDefinition />
    </Grid.RowDefinitions>
    
    <TextBlock 
      Background="Black" 
      Foreground="White" 
      HorizontalAlignment="Stretch" 
      Text="Tasks" 
      TextAlignment="Center" />
    
    <ItemsControl
      Grid.Row="1"     
      DataContext="{StaticResource xmlData}"
      ItemsSource="{Binding}"
      ItemTemplate="{StaticResource taskItemTemplate}" />
  </Grid>
</Window>