Submit a form.
This method looks for the widget first. If found and the widget
has a method called submit, then the widget's submit
method is called. Otherwise, it looks for the DOM element
and invokes the submit method (i.e., assume it is
the FROM element).
Parameters
id: string
the UUID of the widget, or the ID of the FORM element.
Submit a form. This method looks for the widget first. If found and the widget has a method called
submit, then the widget'ssubmitmethod is called. Otherwise, it looks for the DOM element and invokes thesubmitmethod (i.e., assume it is the FROM element).