code: def run(
      self,
      exp_config: Union[Dict[str, Any], str],
      context_dir: Optional[str] = None,
      includes: Optional[Iterable[Union[str, Path]]] = None,
  ) -> int:
      logging.info("MockMasterSearchRunner.run")
      experiment_id_file = self.searcher_dir.joinpath("experiment_id")
      exp_id = 4  # dummy exp
      with experiment_id_file.open("w") as f:
          f.write(str(exp_id))
      state_path = self._get_state_path(exp_id)
      state_path.mkdir(parents=True)
      logging.info(f"Starting HP searcher for mock experiment {exp_id}")
      self.state.experiment_id = exp_id
      self.state.last_event_id = 0
      super(MockMasterSearchRunner, self).save_state(exp_id, [])
      experiment_id = exp_id
      operations: Optional[List[searcher.Operation]] = None
      session: client.Session = Mock()
      super(MockMasterSearchRunner, self).run_experiment(
          experiment_id, session, operations, sleep_time=0.0
      )
      return exp_id
  
imports: import abc
  import logging
  from pathlib import Path
  from typing import Any, Dict, Iterable, List, Optional, Sequence, Union
  from unittest.mock import Mock
  from determined import searcher
  from determined.common.api import bindings
  from determined.experimental import client
label_desc: Use image node_id 4 for calling the MockMasterSearchRunner obj's underlying member method code with example usage: obj.run(exp_config, context_dir, includes) and returns: exp_id