docs: private void validateInstall() throws SetupException {
          // check if rdeck.base is defined.
          if (null == parameters.getBaseDir() || parameters.getBaseDir().equals("")) {
              throw new SetupException("rdeck.base property not defined or is the empty string");
          }
          if (!checkIfDir("rdeck.base", parameters.getBaseDir())) {
              throw new SetupException(parameters.getBaseDir() + " is not a valid rdeck install");
          }
      }