code: def _get_feature_path_based_on_image(self, item):
      image_path = self._get_attrs(item)[0]
      if isinstance(image_path, int):
          return f"{image_path}.npy"
      feature_path = ".".join(image_path.split(".")[:-1]) + ".npy"
      return feature_path
  
file_path: mmf/mmf/datasets/databases/features_database.py
imports: import logging
  from multiprocessing.pool import ThreadPool
  import tqdm
  from mmf.datasets.databases.image_database import ImageDatabase
  from mmf.datasets.databases.readers.feature_readers import FeatureReader
  from mmf.utils.distributed import is_main
  from mmf.utils.general import get_absolute_path
label_desc: Use image node_id 10 for calling the FeaturesDatabase obj's underlying member method code with example usage: obj._get_feature_path_based_on_image(item) and returns: feature_path, image_path, str