internal virtual void Accept(CompareOrphanVisitor visitor) => visitor.VisitOrphan(this);
internal virtual T Accept <T>(CompareOrphanVisitor <T> visitor) => visitor.VisitOrphan(this);
internal virtual void Accept(CompareOrphanVisitor visitor) => visitor.VisitOrphan(this);
internal virtual T Accept <T>(CompareOrphanVisitor <T> visitor) => visitor.VisitOrphan(this);