You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: mod.rs
    path of file: ./repos/turbo/crates/turbopack-ecmascript/src/text
    
    the code of the file until where you have to start completion: use anyhow::Result;
use turbo_tasks::Vc;
use turbo_tasks_fs::FileContent;
use turbopack_core::{
    asset::{Asset, As
    
    async fn content(&self) -> Result<Vc<AssetContent>> {
        let source = self.source.content().file_content();
        let FileContent::Content(content) = &*source.await? else {
            return Ok(AssetContent::file(FileContent::NotFound.cell()));
        };
        let text = content.content().to_str()?;
        let code = format!("export default {};", StringifyJs(&text));
        let content = FileContent::Content(code.into()).cell();
        Ok(AssetContent::file(content))
    }