code: def get_datastore_root_from_config(cls, echo, create_on_absent=True):
      return DATASTORE_SYSROOT_S3
  
file_path: metaflow/metaflow/plugins/datastores/s3_storage.py
imports: import os
  from itertools import starmap
  from metaflow.plugins.datatools.s3.s3 import S3, S3Client, S3PutObject, check_s3_deps
  from metaflow.metaflow_config import DATASTORE_SYSROOT_S3, ARTIFACT_LOCALROOT
  from metaflow.datastore.datastore_storage import CloseAfterUse, DataStoreStorage
label_desc: Use image node_id 2 for calling the S3Storage obj's underlying member method code with example usage: obj.get_datastore_root_from_config(cls, echo, create_on_absent) and returns: DATASTORE_SYSROOT_S3