pub unsafe extern "C" fn g_settings_bind_with_mapping(
settings: *mut GSettings,
key: *const c_char,
object: *mut GObject,
property: *const c_char,
flags: GSettingsBindFlags,
get_mapping: GSettingsBindGetMapping,
set_mapping: GSettingsBindSetMapping,
user_data: gpointer,
destroy: GDestroyNotify,
)