Function gio_sys::g_dbus_proxy_new_for_bus

pub unsafe extern fn g_dbus_proxy_new_for_bus(bus_type: GBusType,
                                              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)