pub unsafe extern "C" fn g_dbus_proxy_new(
connection: *mut GDBusConnection,
flags: GDBusProxyFlags,
info: *mut GDBusInterfaceInfo,
name: *const c_char,
object_path: *const c_char,
interface_name: *const c_char,
cancellable: *mut GCancellable,
callback: GAsyncReadyCallback,
user_data: gpointer,
)