{"ast_node_type":"other","tokens":[{"end":38,"kind":"keyword","start":0,"text":"//"}]}
            // handle negative numbers
            TtElement::Leaf(tt::Leaf::Punct(punct)) if i % 2 == 1 && punct.char == ',' => (),
            TtElement::Leaf(tt::Leaf::Punct(punct)) if i % 2 == 0 && punct.char == '-' => {