@Override
  public void customize(PipeParameters parameters, PipeExtractorRuntimeConfiguration configuration)
      throws Exception {
    throw new UnsupportedOperationException(PLACEHOLDER_ERROR_MSG);
  }
This class is a placeholder and should not be initialized. It represents the default extractor
when no extractor is specified. There is a real implementation in the server module but cannot be
imported here. The pipe agent in the server module will replace this class with the real
implementation when initializing the extractor.
iotdb-core/node-commons/src/main/java/org/apache/iotdb/commons/pipe/agent/plugin/builtin/extractor/iotdb/IoTDBExtractor.java