code: def count_tokens(data: Iterable[str]) -> Counter:
      """
      Count whitespace delimited tokens.
  
      :param data: Sequence of sentences containing whitespace-delimited tokens.
      :return: Token counter.
      """
      return Counter(
          token for line in data for token in utils.get_tokens(line)
      )
  
imports: import argparse
  import json
  import logging
  import os
  from collections import Counter
  from itertools import chain, islice
  from typing import Dict, Iterable, List, Optional, Tuple, Callable
  from sockeye.log import setup_main_logger
  from .None import constants
  from .None import utils
label_desc: Use image node_id 5 for calling a global function with example usage: count_tokens(data) and returns: Counter