code: def get_searcher_metric(self) -> str:
      searcher_metric = self.get("searcher", {}).get("metric")
      assert isinstance(
          searcher_metric, str
      ), f"searcher metric ({searcher_metric}) is not a string"
  
      return searcher_metric
  
file_path: determined/harness/determined/_experiment_config.py
imports: from typing import Any, Dict, List, Optional, Tuple, Union
label_desc: Use image node_id 12 for calling the ExperimentConfig obj's underlying member method code with example usage: obj.get_searcher_metric() and returns: searcher_metric