C#中的aggregation模式

public interface IController
  {
            string GetName();
  }
  public interface IAggInterface
  {
            string GetInnerName();
  } 
  public class Aggregate:IAggInterface
  {
            public string GetInnerName()
            {
                        return "Aggregate";
            }
  }
  public class AggregationPattern:IController,IAggInterface
  {
            protected IAggInterface  aggObj;
            public AggregationPattern()
            {
                        aggObj = new Aggregate();
            }
            public string GetName()
            {
                        return "Controller";
            }
            public string GetInnerName()
            {
                        return aggObj.GetInnerName();
            }