Yog Script (.ys, .yns) analyzed: its lexer, parser and syntax tree, names resolved, the class index model — what the build and the editors read a source with.
namespace Yog.Native;
/// An `extern` method that is a call on the bus: its parameters the
/// request's fields (a Rust struct's, in order), its result the reply.
public sealed class Service(string address) : Attribute {}