Including declarative macro-generated functions in document symbols / code outline?

[mkforsb]

Using the following example code, rust-analyzer does not seem to include the generated method Foo::hello in the document symbol list:

macro_rules! generate_greeting {
    ($greeting:ident, $text:expr) => {
        pub fn $greeting(&self) {
            println!("{}", $text);
        }
    }
}

struct Foo {}

impl Foo {
    generate_greeting!(hello, "Hello, world!");
}

Neither Neovim (using Trouble symbols) nor VSCode's code outline will show me the generated hello symbol in the document symbols list. However, both editors will provide the diagnostic 'method hello is never used.'

Is there any way (i.e configuration option) to include such generated function symbols in the LSP document symbols list? If not, thoughts on potentially adding such a feature?