pub type GDBusInterfaceSetPropertyFunc = Option<unsafe extern "C" fn(connection: *mut GDBusConnection, sender: *const gchar, object_path: *const gchar, interface_name: *const gchar, property_name: *const gchar, value: *mut GVariant, error: *mut *mut GError, user_data: gpointer) -> gboolean>;
enum GDBusInterfaceSetPropertyFunc {
None,
Some(unsafe extern "C" fn(_: *mut _GDBusConnection, _: *const i8, _: *const i8, _: *const i8, _: *const i8, _: *mut _GVariant, _: *mut *mut _GError, _: *mut c_void) -> i32),
}