code: def _add_ssh_keys(
      api_client: LambdaAPIClient,
      user_ssh_public_key: str,
      project_ssh_public_key: str,
  ) -> Tuple[str, str]:
      ssh_keys = api_client.list_ssh_keys()
      ssh_key_names: List[str] = [k["name"] for k in ssh_keys]
      user_key_name = _add_ssh_key(
          api_client, ssh_key_names, user_ssh_public_key
      )
      project_key_name = _add_ssh_key(
          api_client, ssh_key_names, project_ssh_public_key
      )
      return user_key_name, project_key_name
  
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 2 for calling a global function with example usage: _add_ssh_keys(api_client, user_ssh_public_key, project_ssh_public_key) and returns: user_key_name,  project_key_name