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: resource.rs
    path of file: ./repos/fluent-rs/fluent-bundle/src
    
    the code of the file until where you have to start completion: use fluent_syntax::ast;
use fluent_syntax::parser::{parse_runtime, ParserError};

use self_cell::self_cell;

type Resource<'s> = ast::Resource<&'s str>;

self_cell!(
    pub struct InnerFluentResource {
       
    
    pub fn try_new(source: String) -> Result<Self, (Self, Vec<ParserError>)> {
        let mut errors = None;

        let res = InnerFluentResource::new(source, |source| match parse_runtime(source.as_str()) {
            Ok(ast) => ast,
            Err((ast, err)) => {
                errors = Some(err);
                ast
            }
        });

        match errors {
            None => Ok(Self(res)),
            Some(err) => Err((Self(res), err)),
        }
    }