public String getTestClassName() {
    final StackTraceElement[] stack = Thread.currentThread().getStackTrace();
    for (final StackTraceElement stackTraceElement : stack) {
      final String className = stackTraceElement.getClassName();
      if (className.endsWith("IT")) {
        final String result = className.substring(className.lastIndexOf(".") + 1);
        if (!result.startsWith("Abstract")) {
          return result;
        }
      }
    }
    return "UNKNOWN-IT";
  }
This config object stores the properties set by developers during the test. It will be cleared
after each call of cleanupEnvironment.
integration-test/src/main/java/org/apache/iotdb/it/env/cluster/env/AbstractEnv.java