code: def step_task_retry_count(self):
      # UBF plugins don't want retry for the control task. We signal this
      # intent to the runtime by returning (None, None).
      return None, None
  
imports: import os
  import subprocess
  import sys
  from metaflow.cli_args import cli_args
  from metaflow.decorators import StepDecorator
  from metaflow.exception import MetaflowException
  from metaflow.unbounded_foreach import UnboundedForeachInput, UBF_CONTROL, UBF_TASK
  from metaflow.util import to_unicode
label_desc: Use image node_id 5 for calling the InternalTestUnboundedForeachDecorator obj's underlying member method code with example usage: obj.step_task_retry_count() and returns: None,  None