code: def _get_service_account_roles(self) -> List[str]:
      return [
          "roles/compute.admin",
          "roles/iam.serviceAccountUser",
      ]
  
imports: import json
  from typing import Dict, List
  import googleapiclient.discovery
  import googleapiclient.errors
  from google.auth.credentials import Credentials
  from dstack._internal.core.backends.gcp import GCPBackend, auth
  from dstack._internal.core.backends.gcp import utils
  from dstack._internal.core.backends.gcp.config import GCPConfig
  from dstack._internal.core.errors import BackendAuthError, ServerClientError
  from dstack._internal.core.models.backends.base import BackendType, ConfigElement, ConfigElementValue, ConfigMultiElement
  from dstack._internal.core.models.backends.gcp import AnyGCPConfigInfo, GCPConfigInfo, GCPConfigInfoWithCreds, GCPConfigInfoWithCredsPartial, GCPConfigValues, GCPCreds, GCPDefaultCreds, GCPServiceAccountCreds, GCPStoredConfig
  from dstack._internal.server import settings
  from dstack._internal.server.models import BackendModel, ProjectModel
  from dstack._internal.server.services.backends.configurators.base import Configurator, raise_invalid_credentials_error
label_desc: Use image node_id 11 for calling the GCPConfigurator obj's underlying member method code with example usage: obj._get_service_account_roles() and returns: list