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/himalaya/src/folder/command
    
    the code of the file until where you have to start completion: mod add;
mod delete;
mod expunge;
mod list;
mod purge;

use anyhow::Result;
use clap::Subcommand;

use crate::{config::TomlConfig, printer::Printer};

use self::{
    add::AddFolderCommand, delete::FolderDeleteCommand, expunge::FolderExpungeCommand,

    
    pub async fn execute(self, printer: &mut impl Printer, config: &TomlConfig) -> Result<()> {
        match self {
            Self::Add(cmd) => cmd.execute(printer, config).await,
            Self::List(cmd) => cmd.execute(printer, config).await,
            Self::Expunge(cmd) => cmd.execute(printer, config).await,
            Self::Purge(cmd) => cmd.execute(printer, config).await,
            Self::Delete(cmd) => cmd.execute(printer, config).await,
        }
    }