set_wide_handle
Description:
Sets whether the separator should be wide.
Parameters:
| this | a `GtkPaned` | 
| wide | the new value for the [property@Gtk.Paned:wide-handle] property | 
Sets whether the separator should be wide.
| this | a `GtkPaned` | 
| wide | the new value for the [property@Gtk.Paned:wide-handle] property |