{"ast_node_type":"other","tokens":[{"end":79,"kind":"keyword","start":0,"text":"data[USIZE_SIZE..].copy_from_slice(&bytes.len().to_le_bytes());"}]}
                data[USIZE_SIZE..].copy_from_slice(&bytes.len().to_le_bytes());
                data[..USIZE_SIZE].copy_from_slice(&0usize.to_le_bytes());
                let mm = MemoryMap::simple(bytes);