{"ast_node_type":"variable","tokens":[{"end":72,"kind":"keyword","start":0,"text":"let"}]}
        let len = range.end().bytes_usize() - range.start.bytes_usize();
        let begin_ptr = self.bytes.as_mut_ptr().wrapping_add(range.start.bytes_usize());
        Ok(ptr::slice_from_raw_parts_mut(begin_ptr, len))