Function turbolift::extract_function::make_dummy_function

pub fn make_dummy_function(
    function: ItemFn, 
    redirect_fn_name: &str, 
    untyped_params: Punctuated<Box<Pat, Global>, Comma>
) -> ItemFn

wraps any calls to the target function from within its own service with the return type as if the call was made from outside the service. This is one way to allow compilation while references to the target function are in the service codebase.