use rlua::prelude::*;use serde_json;use rlua_serde;pub fn init(lua: &Lua) -> crate::Result<()> {    // Decode string to a table    let module = lua.create_table()?;    module.set("to_table", lua.create_function(|lua, text: String| {        let doc: serde_json::Value = serde_json::from_str(&text).map_err(LuaError::external)?;        let lua_value = rlua_serde::to_value(lua, &doc)?;        Ok(lua_value)    })?)?;    // Encode table to a string    module.set("from_table", lua.create_function(|_, value: LuaValue| {        let lua_value: serde_json::Value = rlua_serde::from_value(value)?;        let string = serde_json::to_string(&lua_value).map_err(LuaError::external)?;        Ok(string)    })?)?;    lua.globals().set("json", module)?;    Ok(())}