code: def round_down(num, divisor):
      return num - (num % divisor)
  
file_path: espnet/espnet2/samplers/category_balanced_sampler.py
imports: import random
  from collections import Counter
  from typing import Iterator, List, Sequence, Tuple, Union
  from typeguard import check_argument_types
  from espnet2.fileio.read_text import load_num_sequence_text, read_2columns_text
  from espnet2.samplers.abs_sampler import AbsSampler
label_desc: Use image node_id 1 for calling a global function with example usage: round_down(num, divisor) and returns: unknown