Method decompress

src/compression.rs:261–264

(&self, data: &'a [u8])

    }

    fn decompress<'a>(&self, data: &'a [u8]) -> Result<Cow<'a, [u8]>> {
        // Zero-copy: return reference to mmap
        Ok(Cow::Borrowed(data))
    }

    fn compress_append(&self, data: &[u8], output: &mut Vec<u8>) -> Result<()> {
        output.extend_from_slice(data);