code: @Override
  	public List<CommerceDiscount> findByG_C(long groupId, String couponCode) {
  		return findByG_C(groupId, couponCode, QueryUtil.ALL_POS,
  			QueryUtil.ALL_POS, null);
  	}
docs: Returns all the commerce discounts where groupId = &#63; and couponCode = &#63;.
  
  @param groupId the group ID
  @param couponCode the coupon code
  @return the matching commerce discounts