/**
     * Matches the given bank transaction with a map of references: 
     * 
     * If the transaction's field "information to account owner" contains the reference, the related 
     * BusinessObject will be memorised, i.e. a list of all matching entries will be returned.
     * 
     * @note A more sophisticated, application specific, behaviour might be implemented in
     * dedicated subclasses
     * 
     * @param boBankTransaction a BusinessObject of type <code>BankTransaction</code>
     * @param mpReferences a map of references to be matched
     * @return a list of all BusinessObject that relate to a matching reference
     * 
     * @throws BusinessException might be thrown by implementing classes in case of errors or other exceptions
     */
    protected List<BusinessObject> findMatchingReferences(final BankTransaction boBankTransaction, 
        final Map<BusinessObject, String> mpReferences) 
    throws 
        BusinessException        
    {
        final ArrayList<BusinessObject> lstMatchingReferences = new ArrayList<BusinessObject>();
        final Set<BusinessObject> stReferencedBusinessObjects = mpReferences.keySet();
        
        // Check, if a matching reference exists...
        for (final BusinessObject businessObject : stReferencedBusinessObjects) {
            final String strReference = mpReferences.get(businessObject);
                
            if (boBankTransaction.getInformationToAccountOwner().indexOf(strReference) > 0) {
                log("matching reference found: " + strReference);
             
                lstMatchingReferences.add(businessObject);
            }
        }
        return lstMatchingReferences;
    }