use rlua::prelude::*;use std::fs;use std::io::Read;use xz2::read::*;use super::ByteBuf;pub fn init(lua: &Lua) -> crate::Result<()> {    let module = lua.create_table()?;    module.set("decompress", lua.create_function(|_, file: (String)| {        let file = fs::File::open(&file).map_err(LuaError::external)?;        let mut data = XzDecoder::new(file);        let mut buf = vec![];        data.read_to_end(&mut buf).map_err(LuaError::external)?;        Ok(ByteBuf(buf))    })?)?;    lua.globals().set("xz", module)?;    Ok(())}