code: def kill(self):
      # Terminating a Kubernetes job is a bit tricky. Issuing a
      # `BatchV1Api.delete_namespaced_job` will also remove all traces of the
      # job object from the Kubernetes API server which may not be desirable.
      # This forces us to be a bit creative in terms of how we handle kill:
      #
      # 1. If the container is alive and kicking inside the pod, we simply
      #    attach ourselves to the container and issue a kill signal. The
      #    way we have initialized the Job ensures that the job will cleanly
      #    terminate.
      # 2. In scenarios where either the pod (unschedulable etc.) or the
      #    container (ImagePullError etc.) hasn't come up yet, we become a
      #    bit creative by patching the job parallelism to 0. This ensures
      #    that the underlying node's resources are made available to
      #    kube-scheduler again. The downside is that the Job wouldn't mark
      #    itself as done and the pod metadata disappears from the API
      #    server. There is an open issue in the Kubernetes GH to provide
      #    better support for job terminations -
      #    https://github.com/kubernetes/enhancements/issues/2232
      # 3. If the pod object hasn't shown up yet, we set the parallelism to 0
      #    to preempt it.
      client = self._client.get()
      if not self.is_done:
          if self.is_running:
              # Case 1.
              from kubernetes.stream import stream
  
              api_instance = client.CoreV1Api
              try:
                  # TODO: stream opens a web-socket connection. It may
                  #       not be desirable to open multiple web-socket
                  #       connections frivolously (think killing a
                  #       workflow during a for-each step).
                  stream(
                      api_instance().connect_get_namespaced_pod_exec,
                      name=self._pod["metadata"]["name"],
                      namespace=self._namespace,
                      command=[
                          "/bin/sh",
                          "-c",
                          "/sbin/killall5",
                      ],
                      stderr=True,
                      stdin=False,
                      stdout=True,
                      tty=False,
                  )
              except:
                  # Best effort. It's likely that this API call could be
                  # blocked for the user.
                  # --------------------------------------------------------
                  # We try patching Job parallelism anyway. Stopping any runaway
                  # jobs (and their pods) is secondary to correctly showing
                  # "Killed" status on the Kubernetes pod.
                  #
                  # This has the effect of pausing the job.
                  try:
                      client.BatchV1Api().patch_namespaced_job(
                          name=self._name,
                          namespace=self._namespace,
                          field_manager="metaflow",
                          body={"spec": {"parallelism": 0}},
                      )
                  except:
                      # Best effort.
                      pass
                      # raise
          else:
              # Case 2.
              # This has the effect of pausing the job.
              try:
                  client.BatchV1Api().patch_namespaced_job(
                      name=self._name,
                      namespace=self._namespace,
                      field_manager="metaflow",
                      body={"spec": {"parallelism": 0}},
                  )
              except:
                  # Best effort.
                  pass
                  # raise
      return self
  
imports: import json
  import math
  import random
  import time
  from metaflow.tracing import inject_tracing_vars
  from metaflow.exception import MetaflowException
  from metaflow.metaflow_config import KUBERNETES_SECRETS
label_desc: Use image node_id 5 for calling the RunningJob obj's underlying member method code with example usage: obj.kill() and returns: self