{"ast_node_type":"other","tokens":[{"end":56,"kind":"keyword","start":0,"text":"mmap.copy_from_slice(d.read_raw_bytes(len));"}]}
            mmap.copy_from_slice(d.read_raw_bytes(len));
            let mut mmap = MmapMut::map_anon(len).unwrap();
            Some(mmap.make_read_only().unwrap())