protected virtual ISyntaxVisitorAction Leave( FragmentSpreadNode node, ISyntaxVisitorContext context) => DefaultAction;
protected virtual ISyntaxVisitorAction Enter( FragmentSpreadNode node, TContext context) => DefaultAction;
protected virtual ISyntaxVisitorAction Leave( FragmentSpreadNode node, ISyntaxVisitorContext context) => DefaultAction;
protected virtual ISyntaxVisitorAction Enter( FragmentSpreadNode node, TContext context) => DefaultAction;