code: def terminate_instance(
      self,
      instance_id: str,
      region: str,
      backend_data: Optional[str] = None,
  ):
      self.api_client.terminate_instances(instance_ids=[instance_id])
  
imports: import hashlib
  import subprocess
  import tempfile
  import time
  from threading import Thread
  from typing import Dict, List, Optional, Tuple
  from pydantic import BaseModel
  from dstack._internal.core.backends.base.compute import Compute, get_instance_name, get_shim_commands
  from dstack._internal.core.backends.base.offers import get_catalog_offers
  from dstack._internal.core.backends.lambdalabs.api_client import LambdaAPIClient
  from dstack._internal.core.backends.lambdalabs.config import LambdaConfig
  from dstack._internal.core.models.backends.base import BackendType
  from dstack._internal.core.models.instances import InstanceAvailability, InstanceOffer, InstanceOfferWithAvailability, LaunchedInstanceInfo
  from dstack._internal.core.models.runs import Job, Requirements, Run
label_desc: Use image node_id 4 for calling the LambdaCompute obj's underlying member method code with example usage: obj.terminate_instance(instance_id, region, backend_data) without return types