private static LineMapper getLineMapper(File[] files) {
    if (HydraLineMapper.isInHydraRun(files)) {
      return new HydraLineMapper(files);
    } else {
      return new DefaultLineMapper();
    }
  }
Create the GUI and show it. For thread safety, this method should be invoked from the
event-dispatching thread.
geode-core/src/test/java/org/apache/geode/sequence/GemfireSequenceDisplay.java