docstr: Returns the index generator base component name.
  - "pc": past covariates
  - "fc": future covariates
docstr_tok: ["Returns","the","index","generator","base","component","name",".","-","``","pc","''",":","past","covariates","-","``","fc","''",":","future","covariates"]
code: def base_component_name(self) -> str:
      """Returns the index generator base component name.
      - "pc": past covariates
      - "fc": future covariates
      """
      pass
  
imports: from abc import ABC, abstractmethod
  from typing import List, Optional, Sequence, Tuple, Union
  import numpy
  import pandas
  from darts import TimeSeries
  from darts.dataprocessing.transformers import FittableDataTransformer
  from darts.logging import get_logger, raise_if, raise_log
  from darts.utils.timeseries_generation import generate_index
label_desc: Use image node_id 5 for calling the CovariatesIndexGenerator obj's underlying member method code with example usage: obj.base_component_name() without return types