{"ast_node_type":"other","tokens":[{"end":97,"kind":"keyword","start":0,"text":"ast::Attr::cast(speculative_args.clone()).and_then(|attr|"}]}
                ast::Attr::cast(speculative_args.clone()).and_then(|attr| attr.token_tree()).map(
                // for pseudo-derive expansion we actually pass the attribute itself only
                    |token_tree| {