code: def serialize(o: object) -> tuple[U, str, int, bool]:
      from kubernetes.client import models as k8s
  
      if not k8s:
          return "", "", 0, False
  
      if isinstance(o, (k8s.V1Pod, k8s.V1ResourceRequirements)):
          try:
              from airflow.providers.cncf.kubernetes.pod_generator import (
                  PodGenerator,
              )
          except ImportError:
              from airflow.kubernetes.pre_7_4_0_compatibility.pod_generator import (  # type: ignore[assignment]
                  PodGenerator,
              )
  
          # We're running this in an except block, so we don't want it to fail
          # under any circumstances, e.g. accessing a non-existing attribute.
          def safe_get_name(pod):
              try:
                  return pod.metadata.name
              except Exception:
                  return None
  
          try:
              return (
                  PodGenerator.serialize_pod(o),
                  qualname(o),
                  __version__,
                  True,
              )
          except Exception:
              log.warning(
                  "Serialization failed for pod %s", safe_get_name(o)
              )
              log.debug(
                  "traceback for serialization error", exc_info=True
              )
              return "", "", 0, False
  
      return "", "", 0, False
  
imports: from __future__ import annotations
  import logging
  from typing import TYPE_CHECKING
  from airflow.utils.module_loading import qualname
label_desc: Use image node_id 1 for calling a global function with example usage: serialize(o) and returns: str,  str,  int,  False, str,  str,  int,  False, PodGenerator,  qualname,  __version__,  True, pod, str,  str,  int,  False, None