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: config.rs
    path of file: ./repos/bee/bee-node/bee-node/src
    
    the code of the file until where you have to start completion: // Copyright 2020-2022 IOTA Stiftung
// SPDX-License-Identifier: Apache-2.0

//! Handles the proper configuration of a node from a single config file.
//!
//! ## Note
//! All node types use a common config file (e.g. config.json), and simply ignore
//! those parameters they don't actually require.

use std::{fs, path::Path};

use bee_
    
    fn config_files_conformity() -> Result<(), NodeConfigError> {
        let json =
            NodeConfigBuilder::<Storage>::from_file(concat!(env!("CARGO_MANIFEST_DIR"), "/config.alphanet.json"))?;
        let toml =
            NodeConfigBuilder::<Storage>::from_file(concat!(env!("CARGO_MANIFEST_DIR"), "/config.alphanet.toml"))?;

        assert!(json == toml);

        Ok(())
    }