code: def __init__(self, config, checksum, cache_map, dataset_manager):
      self.config = config
      self.checksum = checksum
      self.cache_map = cache_map
      self.dataset_manager = dataset_manager
  
imports: import logging
  import os
  from typing import Optional
  from ludwig.constants import CHECKSUM, META, TEST, TRAINING, VALIDATION
  from ludwig.data.cache.types import alphanum, CacheableDataset
  from ludwig.data.cache.util import calculate_checksum
  from ludwig.data.dataset.base import DatasetManager
  from ludwig.utils import data_utils
  from ludwig.utils.fs_utils import delete, path_exists
label_desc: Use image node_id 1 to create a new DatasetCache object  with example: obj = DatasetCache(config, checksum, cache_map, dataset_manager)