code: def omit_none(**kwargs) -> dict:
      return {k: v for k, v in kwargs.items() if v is not None}
  
imports: import time
  from typing import Dict, List, Optional
  import jwt
  import requests
  from dstack._internal.core.backends.nebius.types import ClientError, ConflictError, ForbiddenError, NebiusError, NotFoundError, ResourcesSpec, ServiceAccount
  from dstack._internal.utils.logging import get_logger
label_desc: Use image node_id 1 for calling a global function with example usage: omit_none() and returns: unknown