code: protected void init(CollectorConfiguration config) {
          for (String btxn : config.getTransactions().keySet()) {
              TransactionConfig btc = config.getTransactions().get(btxn);
              init(btxn, btc);
          }
  
          onlyNamedTransactions = new Boolean(config.getProperty(
                  "HAWKULAR_APM_COLLECTOR_ONLYNAMED", Boolean.FALSE.toString()));
      }
docs: This method initialises the filter manager.
  
  @param config The configuration