code: def ensure_datalad_remote(
      repo, remote=None, encryption=None, autoenable=False
  ):
      """Initialize and enable datalad special remote if it isn't already.
  
      Parameters
      ----------
      repo : AnnexRepo
      remote : str, optional
          Special remote name. This should be one of the values in
          datalad.consts.DATALAD_SPECIAL_REMOTES_UUIDS and defaults to
          datalad.consts.DATALAD_SPECIAL_REMOTE.
      encryption, autoenable : optional
          Passed to `init_datalad_remote`.
      """
      from datalad.consts import (
          DATALAD_SPECIAL_REMOTE,
          DATALAD_SPECIAL_REMOTES_UUIDS,
      )
  
      remote = remote or DATALAD_SPECIAL_REMOTE
  
      uuid = DATALAD_SPECIAL_REMOTES_UUIDS.get(remote)
      if not uuid:
          raise ValueError(
              "'{}' is not a known datalad special remote: {}".format(
                  remote, ", ".join(DATALAD_SPECIAL_REMOTES_UUIDS)
              )
          )
      name = repo.get_special_remotes().get(uuid, {}).get("name")
  
      if not name:
          init_datalad_remote(
              repo, remote, encryption=encryption, autoenable=autoenable
          )
      elif repo.is_special_annex_remote(name, check_if_known=False):
          lgr.debug(
              "datalad special remote '%s' is already enabled", name
          )
      else:
          lgr.info("datalad special remote '%s' found. Enabling", name)
          repo.enable_remote(name)
  
file_path: datalad/datalad/customremotes/base.py
imports: from __future__ import absolute_import
  import logging
  from collections import Counter
  from annexremote import RemoteError, UnsupportedRequest
  from datalad.customremotes import SpecialRemote
label_desc: Use image node_id 3 for calling a global function with example usage: ensure_datalad_remote(repo, remote, encryption, autoenable) without return types