code: @Override
  	public CommercePriceList fetchCommercePriceListByReferenceCode(
  		long companyId, String externalReferenceCode) {
  		return commercePriceListPersistence.fetchByC_ERC(companyId, null);
  	}
docs: Returns the commerce price list with the matching external reference code and company.
  
  @param companyId the primary key of the company
  @param externalReferenceCode the commerce price list's external reference code
  @return the matching commerce price list, or <code>null</code> if a matching commerce price list could not be found