code: def _terraform_apply(self):
      cmd = ["terraform", "apply", "-auto-approve"]
      result = subprocess.call(cmd, cwd=self.working_dir)
      if result != 0:
          raise remotelib.OperationError(
              f"error applying Terraform config in {self.working_dir}"
          )
  
imports: import json
  import logging
  import os
  import re
  import subprocess
  import sys
  from guild import remote
  from guild import remote_util
  from guild import util
  from guild import var
  from .None import ssh
  from .None import ssh_util
label_desc: Use image node_id 24 for calling the EC2Remote obj's underlying member method code with example usage: obj._terraform_apply() without return types