code: def __init__(self, baseline_sha: str, name: Optional[str] = None):
      self.baseline_sha = baseline_sha
      self.name: str = name if name else ""
  
file_path: dvc/dvc/repo/experiments/refs.py
imports: from typing import Optional
  from .exceptions import InvalidExpRefError
label_desc: Use image node_id 1 to create a new ExpRefInfo object  with example: obj = ExpRefInfo(baseline_sha, name)