/// <summary>
/// Return the node containing the head tag for this node (or
/// <code>null</code> if none), as recorded in this node's {@link
/// CoreLabel <code>CoreLabel</code>}. (In contrast to {@link
/// edu.stanford.nlp.ling.CategoryWordTag
/// <code>CategoryWordTag</code>}, we store head words and head
/// tags as references to nodes, not merely as <code>string</code>s.)
/// </summary>
/// <returns>the node containing the head tag for this node</returns>
public TreeGraphNode HeadTagNode()
{
TreeGraphNode htn = SafeCast(_label.Get(typeof(TreeCoreAnnotations.HeadTagAnnotation)));
if (htn == null || (htn.TreeGraph() != null && !(htn.TreeGraph().Equals(this.TreeGraph()))))
{
return(null);
}
return(htn);
}
// TODO it's not really clear what graph the copy should be a part of
public TreeGraphNode(TreeGraphNode t) :
this(t, t._parent)
{
this.SetTreeGraph(t.TreeGraph());
}
// TODO it's not really clear what graph the copy should be a part of
public TreeGraphNode(TreeGraphNode t) :
this(t, t._parent)
{
this.SetTreeGraph(t.TreeGraph());
}