/**
* When it does not make sense to show any specific contents, this signal is emitted and the receiver hides the bar.
- * Later it might sense to show it again e.g. because the user selected items. Then this signal is used to request showing of the bar.
+ * Later it might make sense to show it again e.g. because the user selected items. Then this signal is used to request showing of the bar.
*/
void barVisibilityChangeRequested(bool visible);