@Override
  public TableFunctionProcessorProvider getProcessorProvider(
      TableFunctionHandle tableFunctionHandle) {
    return new TableFunctionProcessorProvider() {
      @Override
      public TableFunctionDataProcessor getDataProcessor() {
        return (input, properColumnBuilders, passThroughIndexBuilder) -> {
          // do nothing
        };
      }
    };
  }
It is a table function with wrong implementation, which is only used for testing.
integration-test/src/main/java/org/apache/iotdb/db/query/udf/example/relational/MyErrorTableFunction.java