How to use subxt to execute a utility.batch call?

Question

So far the team was aiming for doing something like this:

let batch_tx = subxt::dynamic::tx(
    "Utility",
    "batch",
    txes.iter().map(|tx| tx.into_value()).collect::<Vec<Value<_>>>(),
);

Answer 1

Something like this:

let tx = polkadot::tx()
         .utility()
         .batch(calls);

let hash = api.tx().sign_and_submit_default(&tx, &signer).await?;

println!("Extrinsic submitted: {}", hash);

Ok(())

where calls is a vec! of calls.