Provided by: Griffon

Identifies the top level node of a secondary View script. View scripts are expected to return the top level node, however there may be times when further customizations prevent this from happening, for example wiring up a custom listener. When that happens the result has to be made explicit otherwise the script will return the wrong value. Using the `root()` node avoids forgetting this fact while also providing an alias for the node.

Secondary view script named "SampleSecondary"

    root(
        tree(id: 'mytree')
    )mytree.addTreeSelectionModel(new DefaultTreeSelectionModel() {
       …
    })

Primary view script named "SampleView"

    build(SampleSecondary)
    application(title: 'Sample') {
        borderLayout()
        label 'Options', constraints: NORTH
        widget root(SampleSecondary)
    }

This node accepts an additional parameter `name` that can be used to override the default alias assigned to the node. If you specify a value for this parameter when the node is built then you'll need to use it again to retrieve the node.