public override Style VisitMoveNumberSyntax(PgnMoveNumberSyntax node, PgnEditor pgnEditor) => pgnEditor.Styles[moveNumberStyleIndex];
public virtual void VisitMoveNumberSyntax(PgnMoveNumberSyntax node) => DefaultVisit(node);
public override IGreenPgnSymbol VisitMoveNumberSyntax(PgnMoveNumberSyntax node) => node.Green;