{"ast_node_type":"other","tokens":[{"end":74,"kind":"keyword","start":0,"text":"Some(tt::TokenTree::Leaf(tt::Leaf::Literal(lit)))"}]}
                    Some(tt::TokenTree::Leaf(tt::Leaf::Literal(lit))) => {
                match input.flat_tokens().get(1) {
                        Some(Box::new(AttrInput::Literal(lit.clone())))