code: def _azcopy_cmd():
      cmd = util.which("azcopy")
      if not cmd:
          raise remotelib.OperationError(
              "AzCopy is not available\n"
              "Refer to https://docs.microsoft.com/en-us/azure/storage/"
              "common/storage-use-azcopy-v10 for help installing it."
          )
      return cmd
  
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 1 for calling a global function with example usage: _azcopy_cmd() and returns: cmd