function from_yaml not found in Arg<'_>

[dwisiswant0]

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• I have searched the discussions
• I have searched the existing issues

Rust Version

1.53.0 (53cb7b09b 2021-06-17)

Clap Version

3.0.0-beta.2

Minimal reproducible code

use {
	clap::{
		App, Arg,
		load_yaml,
		crate_authors,
		crate_description,
		crate_name,
		crate_version
	},
};

#[async_std::main]
async fn main() {
	let yaml = load_yaml!("cli.yaml");
	let args = Arg::from_yaml(yaml);
	let matches = App::new(crate_name!())
		.author(crate_authors!())
		.about(crate_description!())
		.name(crate_name!())
		.version(crate_version!())
		.arg(args)
		.get_matches();
...

Steps to reproduce the bug with the above code

cargo run --

Actual Behaviour

Can't call from_yaml method.

Expected Behaviour

Should be able to use (according to documentation).

Additional Context

No response

Debug Output

No response