code: def get_min_hash(tokens: List[str]) -> Optional[MinHash]:
      """Compute the MinHash of a code snippet."""
      if len(tokens) < MIN_NUM_TOKENS:
          return None
      min_hash = MinHash(num_perm=NUM_PERM)
      for token in set(tokens):
          min_hash.update(token.encode())
      return min_hash
  
imports: import json
  import multiprocessing
  import re
  from collections import defaultdict
  from functools import partial
  from typing import Dict, List, Optional, Set, Tuple, Type
  from datasets import Dataset
  from datasketch import MinHash, MinHashLSH
  from dpu_utils.utils.iterators import ThreadedIterator
  from tqdm import tqdm
label_desc: Use image node_id 1 for calling a global function with example usage: get_min_hash(tokens) and returns: min_hash, None