code: def _is_elastic(args):
      return (
          args.host_discovery_script is not None
          or args.min_num_proc is not None
      )
  
imports: import argparse
  import hashlib
  import logging
  import io
  import os
  import sys
  import textwrap
  import warnings
  import yaml
  import horovod
  from horovod.common.util import extension_available, gloo_built, mpi_built, nccl_built, ddl_built, ccl_built
  from horovod.runner.common.util import config_parser, hosts, safe_shell_exec, secret, timeout
  from horovod.runner.common.util import settings
  from horovod.runner.driver import driver_service
  from horovod.runner.elastic import settings
  from horovod.runner.elastic import discovery
  from horovod.runner.util import cache, threads, network, lsf
  from horovod.runner.gloo_run import gloo_run, gloo_run_elastic
  from horovod.runner.mpi_run import mpi_run
  from horovod.runner.js_run import js_run, is_jsrun_installed
  from horovod.runner.http.http_client import read_data_from_kvstore, put_data_into_kvstore
  from horovod.runner.http.http_server import KVStoreServer
  from horovod.runner.util.remote import get_remote_command
label_desc: Use image node_id 15 for calling a global function with example usage: _is_elastic(args) and returns: unknown