{"ast_node_type":"other","tokens":[{"end":57,"kind":"keyword","start":0,"text":"Node::TraitRef(a)"}]}
            Node::TraitRef(a) => self.print_trait_ref(a),
            Node::AssocItemConstraint(a) => self.print_assoc_item_constraint(a),
            Node::OpaqueTy(_) => panic!("cannot print Node::OpaqueTy"),