I have a content tree that looks like this:

<Content>
    <NodeA>
        <NodeA1/>
        <NodeA2/>
        <NodeA3/>
    </NodeA>
    <NodeB>
        <NodeB1/>
        <NodeB2/>
    </NodeB>
</Content>

I am trying to use the nodeFactory to navigate this tree. If my current node is NodeA2 and I want to get to NodeB2, I thought I could do something like this:

Node root = Node.GetCurrent();
while(root.Parent != null)
    root = root.Parent;

Node NodeB2 = root.Children[1].Children[1];

However, the loop to get the root node stops at NodeA because the parent of NodeA is null. How am I supposed to get to the sibling nodes?