code: private Map<String, Map<String, String>> parseTransportParameters(Map<String, String> parameters)
              throws JournalException {
          Map<String, Map<String, String>> allTransports =
                  new LinkedHashMap<String, Map<String, String>>();
          for (String key : parameters.keySet()) {
              if (isTransportParameter(key)) {
                  Map<String, String> thisTransport =
                          getThisTransportMap(allTransports,
                                              getTransportName(key));
                  thisTransport.put(getTransportParameterName(key), parameters
                          .get(key));
              }
          }
          return allTransports;
      }
docs: Create a Map of Maps, holding parameters for all of the transports.
  
  @throws JournalException