code: func (ps *PrintSettings) Get(key string) string {
  	cstr := C.CString(key)
  	defer C.free(unsafe.Pointer(cstr))
  	c := C.gtk_print_settings_get(ps.native(), (*C.gchar)(cstr))
  	return C.GoString((*C.char)(c))
  }
docs: // Get() is a wrapper around gtk_print_settings_get().