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/reth/bin/reth/src/commands/node
    
    the code of the file until where you have to start completion: //! Main node command for launching a node

use crate::{
    args::{
        utils::{chain_help, genesis_value_parser, parse_socket_address, SUPPORTED_CHAINS},
        DatabaseArgs, DebugArgs, DevArgs, NetworkArgs, PayloadBuilderAr
    
    fn parse_config_path() {
        let cmd =
            NodeCommand::try_parse_args_from(["reth", "--config", "my/path/to/reth.toml"]).unwrap();
        // always store reth.toml in the data dir, not the chain specific data dir
        let data_dir = cmd.datadir.unwrap_or_chain_default(cmd.chain.chain);
        let config_path = cmd.config.unwrap_or(data_dir.config_path());
        assert_eq!(config_path, Path::new("my/path/to/reth.toml"));

        let cmd = NodeCommand::try_parse_args_from(["reth"]).unwrap();

        // always store reth.toml in the data dir, not the chain specific data dir
        let data_dir = cmd.datadir.unwrap_or_chain_default(cmd.chain.chain);
        let config_path = cmd.config.clone().unwrap_or(data_dir.config_path());
        let end = format!("reth/{}/reth.toml", SUPPORTED_CHAINS[0]);
        assert!(config_path.ends_with(end), "{:?}", cmd.config);
    }