public void Accept(TestSuiteTreeNodeVisitor visitor)
 {
     foreach (TestSuiteTreeNode node in Nodes)
     {
         node.Accept(visitor);
     }
 }
 internal void Accept(TestSuiteTreeNodeVisitor visitor)
 {
     visitor.Visit(this);
     foreach (TestSuiteTreeNode node in this.Nodes)
     {
         node.Accept(visitor);
     }
 }