Function gdk_pixbuf_sys::gdk_pixbuf_save_to_streamv_async

pub unsafe extern "C" fn gdk_pixbuf_save_to_streamv_async(
    pixbuf: *mut GdkPixbuf, 
    stream: *mut GOutputStream, 
    type_: *const c_char, 
    option_keys: *mut *mut c_char, 
    option_values: *mut *mut c_char, 
    cancellable: *mut GCancellable, 
    callback: GAsyncReadyCallback, 
    user_data: gpointer
)

This is supported on crate feature v2_36 only.