Function gio_2_0_sys::g_async_initable_newv_async

pub unsafe extern "C" fn g_async_initable_newv_async(
    object_type: GType, 
    n_parameters: guint, 
    parameters: *mut GParameter, 
    io_priority: gint, 
    cancellable: *mut GCancellable, 
    callback: Option<GAsyncReadyCallback>, 
    user_data: gpointer
)