Function gio_2_0_sys::g_socket_address_enumerator_next_async

pub unsafe extern "C" fn g_socket_address_enumerator_next_async(
    enumerator: *mut GSocketAddressEnumerator, 
    cancellable: *mut GCancellable, 
    callback: Option<GAsyncReadyCallback>, 
    user_data: gpointer
)