code: def _get_empty_lm_state() -> "kenlm.State":
      """Get unintialized kenlm state.
  
      Taken from: https://github.com/kensho-technologies/pyctcdecode
  
      Returns
      -------
      kenlm_state : kenlm.State
          Empty kenlm state.
      """
      try:
          kenlm_state = kenlm.State()
      except ImportError:
          raise ValueError(
              "To use a language model, you need to install kenlm."
          )
      return kenlm_state
  
file_path: speechbrain/speechbrain/decoders/language_model.py
imports: import logging
  from typing import Collection, Optional, Set, Tuple, cast
  from pygtrie import CharTrie
  import math
label_desc: Use image node_id 3 for calling a global function with example usage: _get_empty_lm_state() and returns: kenlm_state