docs: @Override
  	public CommercePaymentMethodGroupRel findByPrimaryKey(
  		Serializable primaryKey) throws NoSuchPaymentMethodGroupRelException {
  		CommercePaymentMethodGroupRel commercePaymentMethodGroupRel = fetchByPrimaryKey(primaryKey);
  
  		if (commercePaymentMethodGroupRel == null) {
  			if (_log.isDebugEnabled()) {
  				_log.debug(_NO_SUCH_ENTITY_WITH_PRIMARY_KEY + primaryKey);
  			}
  
  			throw new NoSuchPaymentMethodGroupRelException(_NO_SUCH_ENTITY_WITH_PRIMARY_KEY +
  				primaryKey);
  		}
  
  		return commercePaymentMethodGroupRel;
  	}