public virtual void Visit(IUnknownReference unknownRef, TContext context) { }
public override IReference Visit(IUnknownReference eventRef, int context) { return(new UnknownReference()); }
public int Visit(IUnknownReference unknownRef, int context) { throw new NotImplementedException(); }
public void Visit(IUnknownReference unknownRef, SSTPrintingContext c) { c.UnknownMarker(); }