pub fn ask_scene(
output: &mut SceneOutput,
limits: &mut Vec<String>,
ask: SceneAsk<'_>,
) -> Result<(), (Code, String)>Expand description
output answering ask in place of its scene: the value at its path,
and its data’s shape, with what the shape’s absence adds to limits;
or the problem code and why, a path that names nothing. With no scene,
or nothing asked, it is left as it is.