{"ast_node_type":"other","tokens":[{"end":92,"kind":"keyword","start":0,"text":"alt.and_then(|alt|"}]}
            alt.and_then(|alt| tcx.hir_parent_iter(alt.hir_id).next()).map(|(_, node)| node)
        let needs_block = if let Some(hir::Node::Expr(expr)) =
        {