TBD
Typed Access to context
// Instead of:
TCP.getContext().put("node", new TreeNode());
TreeNode node = TCP.getContext().get("node");
// or:
TCP.getContext().put(NODE, new TreeNode());
TreeNode node = TCP.getContext().get(NODE);
// Use:
treeNodeCV.setTreeNode(new TreeNode());
TreeNode node = treeNodeCV.getTreeNode();