{"ast_node_type":"other","tokens":[{"end":89,"kind":"keyword","start":0,"text":"decl.inputs.iter().map(|t|"}]}
            decl.inputs.iter().map(|t| t.span).chain(std::iter::once(decl.output.span()))
            let decl = node.fn_decl().unwrap_or_else(|| bug!("expected fn decl, found {:?}", node));
        };