code: def _new_meta_id(self):
      meta_id = uuid.uuid4().hex
      with util.TempFile("guild-azure-blob-") as tmp:
          with open(tmp.path, "w") as f:
              f.write(meta_id)
          args = [tmp.path, self._container_path("meta-id")]
          self._azcopy("copy", args)
  
imports: import logging
  import os
  import subprocess
  import sys
  import uuid
  from guild import remote
  from guild import remote_util
  from guild import util
  from guild import var
  from .None import meta_sync
label_desc: Use image node_id 13 for calling the AzureBlobStorageRemote obj's underlying member method code with example usage: obj._new_meta_id() without return types