{"ast_node_type":"variable","tokens":[{"end":60,"kind":"keyword","start":0,"text":"let"}]}
            let mut total = [0u8; usize::BITS as usize / 8];
            let bytes_needed = tag.length().unwrap().0 as usize;
            total[..bytes_needed].copy_from_slice(self.read_raw_bytes(bytes_needed));