When Flow layout is used nodes are rendered horizontally to fill the available width.
        Nodes automatically wrap.
    
    
        If Flow layout is applied to a given level, the levels below it are not rendered.
    
    
        When using Flow layout, the nodes are separated with a pipe symbol by default. You
        can change this using the SeparatorText property. The SeparatorTemplate
        property allows you to fully customize the separator and use images or custom markup.