StyleContext.save
void save()Saves the context state.
This allows temporary modifications done through [gtk.style_context.StyleContext.addClass], [gtk.style_context.StyleContext.removeClass], [gtk.style_context.StyleContext.setState] to be quickly reverted in one go through [gtk.style_context.StyleContext.restore].
The matching call to [gtk.style_context.StyleContext.restore] must be done before GTK returns to the main loop.
Deprecated
This API will be removed in GTK 5