code: def _update_state(
      self, x_t: Union[np.ndarray, "tf.Tensor", "torch.Tensor"]
  ):
      pass
  
imports: import logging
  import warnings
  from abc import abstractmethod
  from typing import Any, Callable, Dict, List, Optional, Union, Tuple, TYPE_CHECKING
  import numpy
  from alibi_detect.base import BaseDetector, concept_drift_dict
  from alibi_detect.cd.utils import get_input_shape
  from alibi_detect.utils.state import StateMixin
  from alibi_detect.utils._types import Literal
label_desc: Use image node_id 4 for calling the BaseMultiDriftOnline obj's underlying member method code with example usage: obj._update_state(x_t) without return types