def _dock_add_group_box(self, name, *, collapse=None, layout=None):
layout = self._dock_layout if layout is None else layout
if collapse is None:
hlayout = VBox([HTML("<strong>" + name + "</strong>")])
else:
assert isinstance(collapse, bool)
vbox = VBox()
hlayout = Accordion([vbox])
hlayout.set_title(0, name)
if collapse:
hlayout.selected_index = None
else:
hlayout.selected_index = 0
self._layout_add_widget(layout, hlayout)
return hlayout
