set_side
Description:
Determines which part of decoration layout the window controls widget uses.
See [property@Gtk.WindowControls:decoration-layout].
Parameters:
| this | a window controls widget | 
| side | a side | 
Determines which part of decoration layout the window controls widget uses.
See [property@Gtk.WindowControls:decoration-layout].
| this | a window controls widget | 
| side | a side |