{"ast_node_type":"other","tokens":[{"end":77,"kind":"keyword","start":0,"text":"assert_eq!(var.index()"}]}
        assert_eq!(var.index() as usize, self.type_variable_table.len() - 1);
        self.extend_type_variable_table(var.index() as usize);
        let flags = self.type_variable_table.get_mut(var.index() as usize).unwrap();