code: def ts_version(self, version):
      for k, v in version.items():
          if k == "branch":
              self.bm_config["version"] = v
          elif k == "nightly":
              self.bm_config[
                  "version"
              ] = "torchserve-nightly=={}".format(v)
          elif k == "release":
              self.bm_config["version"] = "torchserve=={}".format(v)
          break
  
imports: import argparse
  import datetime
  import os
  import shutil
  from subprocess import Popen
  import ruamel.yaml
  from utils import gen_md_report, gen_metrics_json, gen_model_config_json
label_desc: Use image node_id 2 for calling the BenchmarkConfig obj's underlying member method code with example usage: obj.ts_version(version) without return types