{"ast_node_type":"variable","tokens":[{"end":66,"kind":"keyword","start":0,"text":"let"}]}
        let count = to_index - self.type_variable_table.len() + 1;
    fn extend_type_variable_table(&mut self, to_index: usize) {
        self.type_variable_table.extend(std::iter::repeat_n(TypeVariableFlags::default(), count));