Calling deprecated methods – warn?

[dvdplm]

Consider an RPC server where some methods are marked as deprecated:

	#[rpc(client, server, namespace = "foo")]
	pub trait Rpc {
		#[method(name = "foo")]
		async fn async_method(&self, param_a: u8, param_b: String) -> RpcResult<u16>;

		#[deprecated(since="0.5.0", note="please use `new_method` instead")]
		#[method(name = "bar")]
		fn sync_method(&self) -> RpcResult<u16>;
       }

Ideally, using the generated Rust client should inform/warn the user when client.sync_method() is called. Preferably at compile time.

e.g. paritytech/substrate#8783 (comment)

[niklasad1]

That's good idea I like it

[lexnv]

PR for deprecated methods: #570

[niklasad1]

Closed by #570