NS_IMETHOD GetNameSpaceID(PRInt32& aID) const { aID = kNameSpaceID_None;
NS_IMETHOD GetNameSpaceID(PRInt32* aID) const { *aID = kNameSpaceID_None;
  NS_IMETHOD GetNameSpaceID(PRInt32& aID) const {    aID = kNameSpaceID_None;    return NS_OK;  }