code: def runtime_step_cli(
      self, cli_args, retry_count, max_user_code_retries, ubf_context
  ):
      if ubf_context == UBF_CONTROL:
          num_parallel = cli_args.task.ubf_iter.num_parallel
          cli_args.command_options["num-parallel"] = str(num_parallel)
  
file_path: metaflow/metaflow/plugins/parallel_decorator.py
imports: from metaflow.decorators import StepDecorator
  from metaflow.unbounded_foreach import UBF_CONTROL
  from metaflow.exception import MetaflowException
  import os
  import sys
label_desc: Use image node_id 2 for calling the ParallelDecorator obj's underlying member method code with example usage: obj.runtime_step_cli(cli_args, retry_count, max_user_code_retries, ubf_context) without return types