OptionalcounterOptionalmodeDetermines whether the widget should be only opened, revealed or activated.
By default is activate.
OptionalnotebookOptionalwidgetSpecify how an opened widget should be added to the shell. By default to the main area.
WidgetOpenerOptionsdefine generic options used by the WidgetOpenHandler.Note: This object may contain references to widgets (e.g.
widgetOptions.ref); these need to be transformed before it can be serialized.