//! A shaped map read step by step.
/// A shaped map being read step by step: which shape, and how far.
#[derive(Debug, Clone, Copy)]pub(incrate::wire::binary)structWalk{/// The nesting depth of the map.
pub(in crate::wire::binary) depth:usize,
pub(in crate::wire::binary) shape:usize,
/// The next key to hand out.
pub(in crate::wire::binary) next:usize,
}