Sets the currently displayed value of self to count.
The numeric value is always clamped to make it two digits, i.e.
between -99 and 99. Setting a count of zero removes the emblem.
If this method is called, and a label was already set on the icon,
it will automatically be reset to null before rendering the number,
i.e. the last method called between gtk.numerable_icon.NumerableIcon.setCount
and gtk.numerable_icon.NumerableIcon.setLabel has always priority.
Sets the currently displayed value of self to count.
The numeric value is always clamped to make it two digits, i.e. between -99 and 99. Setting a count of zero removes the emblem. If this method is called, and a label was already set on the icon, it will automatically be reset to null before rendering the number, i.e. the last method called between gtk.numerable_icon.NumerableIcon.setCount and gtk.numerable_icon.NumerableIcon.setLabel has always priority.