UnaryNode
class UnaryOpNode : public UnaryNode {
class UnaryNode : public QueryNode {
UnaryNode();
virtual ~UnaryNode();
UnaryNode::ChildAt(int32 index)
UnaryNode::UnaryNode()
UnaryNode::~UnaryNode()
UnaryNode::Arity() const
UnaryNode::SetChildAt(QueryNode *child, int32 index)