code: def create_full_path(self, card_path):
      return os.path.join(self._backend.datastore_root, card_path)
  
imports: from collections import namedtuple
  from io import BytesIO
  import os
  import json
  import shutil
  from metaflow.plugins.datastores.local_storage import LocalStorage
  from metaflow.metaflow_config import CARD_S3ROOT, CARD_LOCALROOT, DATASTORE_LOCAL_DIR, CARD_SUFFIX, CARD_AZUREROOT, CARD_GSROOT, SKIP_CARD_DUALWRITE
  import metaflow.metaflow_config
  from .exception import CardNotPresentException
label_desc: Use image node_id 14 for calling the CardDatastore obj's underlying member method code with example usage: obj.create_full_path(card_path) and returns: os