{"ast_node_type":"other","tokens":[{"end":94,"kind":"keyword","start":0,"text":"ctx.nesting.get(ctx.nesting.len()"}]}
                    ctx.nesting.get(ctx.nesting.len() - 1 - depth).map_or(0, |nest| nest.idx);
                let index =
                builder.push(tt::Leaf::Literal(tt::Literal {