internal PgnBracketOpenSyntax(PgnTagElementWithTriviaSyntax parent) : base(parent) { }
internal PgnTagElementSyntax(PgnTagElementWithTriviaSyntax parent) => Parent = parent;
internal override PgnTagElementSyntax CreateRedNode(PgnTagElementWithTriviaSyntax parent) => new PgnBracketOpenSyntax(parent);
internal abstract PgnTagElementSyntax CreateRedNode(PgnTagElementWithTriviaSyntax parent);