s: Option<zstd_seekable::Seekable<OffFile>>,

    s: Option<zstd_seekable::Seekable<'static, OffFile>>,

            Some(zstd_seekable::Seekable::init(

            Some(zstd_seekable::Seekable::init(Box::new(

            )?)

            ))?)

zstd-seekable = { version = "0.2.2", optional = true }

zstd-seekable = { version = "0.1.0", optional = true }