Function gdk4::content_deserialize_async

pub fn content_deserialize_async<R: FnOnce(Result<Value, Error>) + 'static>(
    stream: &impl IsA<InputStream>,
    mime_type: &str,
    type_: Type,
    io_priority: Priority,
    cancellable: Option<&impl IsA<Cancellable>>,
    callback: R
)