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: terra_exec.rs
    path of file: ./repos/terra-rust/src/bin
    
    the code of the file until where you have to start completion: use anyhow::Result;
use clap::{Arg, ArgMatches};
use dotenv::dotenv;
use secp256k1::Secp256k1;
use terra_rust_api::core_types::Coin;
use terra_rust_api::{Message, MsgExecuteContract};
use terra_rust_cli::cli_helpers;
//use tokio::runtime::Handle;

/// VERSION number of package
pub const VERSION: Option<&'static str> = option_env!("CARGO_PKG_VERSION");
/// NAME of package
pub const NAME: Option<&'static str> = option_env!("CARGO_PKG_NAME");

async fn run() -> Result<()> {
    let app = cli_helpers::gen_cli("terra exec", "terra-exec").args(&[
        Arg::new("contract")
            .long("c
    
async fn run() -> Result<()> {
    let app = cli_helpers::gen_cli("terra exec", "terra-exec").args(&[
        Arg::new("contract")
            .long("contract")
            .takes_value(true)
            .value_name("contract")
            .env("TERRARUST_CONTRACT")
            .required(true)
            .help("the contract address"),
        Arg::new("coins")
            .long("coins")
            .takes_value(true)
            .value_name("coins")
            .required(false)
            .help("coins you want to send (optional)"),
        Arg::new("json")
            .takes_value(true)
            .value_name("json")
            .required(true)
            .help("json string"),
    ]);

    Ok(run_it(&app.get_matches()).await?)
}