public void RemoveRequestFinishedListener(IRequestFinishedListener listener)
 {
     lock (mFinishedListeners)
     {
         mFinishedListeners.Remove(listener);
     }
 }
 public void AddRequestFinishedListener(IRequestFinishedListener listener)
 {
     lock (mFinishedListeners)
     {
         mFinishedListeners.Add(listener);
     }
 }
 public void RemoveRequestFinishedListener(IRequestFinishedListener listener)
 {
     lock (mFinishedListeners)
     {
         mFinishedListeners.Remove(listener);
     }
 }
 public void AddRequestFinishedListener(IRequestFinishedListener listener)
 {
     lock (mFinishedListeners)
     {
         mFinishedListeners.Add(listener);
     }
 }