IronPython.Compiler.Ast.TupleExpression.Walk C# (CSharp) Method

        public override void Walk(PythonWalker walker) {
            if (walker.Walk(this)) {
                if (Items != null) {
                    foreach (Expression e in Items) {
                        e.Walk(walker);
                    }
                }
            }
            walker.PostWalk(this);
        }

 public override void Walk(PythonWalker walker)
 {
     if (walker.Walk(this))
     {
         _tuple?.Walk(walker);
         _defaultValue?.Walk(walker);
     }
     walker.PostWalk(this);
 }