class_docstr: Class for synthetic or dummy runner.
  
  Currently acts as a shell runner, only creating a name.
code: def run_metadata_report_keys(self) -> List[str]:
      return ["name"]
  
file_path: Ax/ax/runners/synthetic.py
imports: from typing import Any, Dict, Iterable, List, Optional, Set
  from ax.core.base_trial import BaseTrial, TrialStatus
  from ax.core.runner import Runner
label_desc: Use image node_id 4 for calling the SyntheticRunner obj's underlying member method code with example usage: obj.run_metadata_report_keys() and returns: list