Create action without parent

Currently in SwingBuilder it is not possible to create an action object in SwingBuilder without assigning it to a parent. This make it more difficult to create an action and assign it to multiple widgets. Currently, it can somewhat awkwardly like this:

builder.frame() {
actions = [:]

menuBar() {
menu( text: "File" ) {
actions.exit = menuItem( action(name: "Exit",
closure:

)
)
}
}

button( action: actions.exit )
}

The problem is the form is less clear and requires you to create this map object. It might be nicer to have a section in the builder where actions are declared seperately and stored referred to by variable names:

builder.frame() {
// Action Section
exit = action( name:"Exit", closure:

)

// Menu Section
menuBar() {
menu( text:"File" )

}

// Content
button( action: exit )
}