code: def pytest_report_header(config):
      bconf = config.bench_config
      return (
          "dvc-bench: ("
          f"dataset: '{bconf.dataset}',"
          f"revs: '{bconf.dvc_revs}'"
          ")"
      )
  
label_desc: Use image node_id 1 for calling a global function with example usage: pytest_report_header(config) and returns: str, bconf, str, bconf, str