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 System.Diagnostics.CodeAnalysis;
/// A constructor that sets every `required` member of its type (.NET's
/// `SetsRequiredMembersAttribute`): a `new` calling it needn't set them.
public sealed class SetsRequiredMembers : Attribute {
}