How to get instance of Panel that holds content of ItemsControl?

Every ItemsControl has its content stored in Panel right ? We can specify the panel to be used in XAML like this:

<ListView Name="LView">
    <ListView.ItemsPanel>
        <ItemsPanelTemplate >
            <StackPanel/>
        </ItemsPanelTemplate>
     </ListView.ItemsPanel>
</ListView>

My question is how to get instance of Panel that is used in the ItemsPanel property (of type ItemsPanelTemplate) of the particular ItemsControl ? For example ListView called LView from above code sample?

I cannot use Name property or x:Name, this must work for any ItemsControl even those using default ItemsPanel.

In the case its not clear please comment, I think there is very simple solution. If it seems to be complicated that's only because I cannot explain it properly.