TreeNode

Type Parameters:

T - the actual implementation type of this TreeNode

All Superinterfaces:

GraphNode<T>

All Known Subinterfaces:

BinaryTreeNode<T>, MutableBinaryTreeNode<T>, MutableTreeNode<T>, Node<V>

All Known Implementing Classes:

ImmutableBinaryTreeNode, ImmutableTreeNode, MutableBinaryTreeNodeImpl, MutableTreeNodeImpl
```
public interface TreeNode<T extends TreeNode<T>>
extends GraphNode<T>
```
A specialization of a GraphNode that contains a reference to its parent, thereby making the graph a tree (since each node can now have only one parent node).

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  T getParent()
  Returns the parent node or null if this node is the root.
  - Methods inherited from interface org.parboiled.trees.GraphNode
    getChildren

- Method Detail
  - getParent
```
T getParent()
```
    Returns the parent node or null if this node is the root.
    
    Returns:
    
    the parent node