code: def __init__(self, ngram_bin_path):
      self.ngram_bin_path = ngram_bin_path
  
imports: import argparse
  import os
  import subprocess
  import sys
  from typing import Tuple
  import kenlm_utils
  import torch
  import nemo.collections.asr
  from nemo.collections.asr.modules.rnnt import RNNTDecoder
  from nemo.collections.asr.parts.submodules.ctc_beam_decoding import DEFAULT_TOKEN_OFFSET
  from nemo.utils import logging
label_desc: Use image node_id 1 to create a new NgramMerge object  with example: obj = NgramMerge(ngram_bin_path)