Sets the widget currently visible when the leaflet is folded.
The transition is determined by propertyLeaflet:transition-type and
propertyLeaflet:child-transition-params. The transition can be cancelled
by the user, in which case visible child will change back to the previously
visible child.
Sets the widget currently visible when the leaflet is folded.
The transition is determined by propertyLeaflet:transition-type and propertyLeaflet:child-transition-params. The transition can be cancelled by the user, in which case visible child will change back to the previously visible child.