code: def __init__(
      self,
      repo: "Repo",
      stages: Optional[List["Stage"]] = None,
      metrics: Optional[Dict[str, List[str]]] = None,
      plots: Optional[Dict[str, List[str]]] = None,
      params: Optional[Dict[str, Any]] = None,
      artifacts: Optional[Dict[str, Any]] = None,
  ) -> None:
      self.repo = repo
      self.stages = stages or []
      self._metrics = metrics or {}
      self._plots = plots or {}
      self._params = params or {}
      self._artifacts = artifacts or {}
      self._collected_targets: Dict[int, List["StageInfo"]] = {}
  
imports: import logging
  import time
  from collections import defaultdict
  from functools import partial
  from itertools import chain
  from typing import TYPE_CHECKING, Any, Callable, Dict, Iterable, Iterator, List, NamedTuple, Optional, Set, Tuple, Union
  from funcy.debug import format_time
  from dvc.dependency import ParamsDependency
  from dvc.fs import LocalFileSystem
  from dvc.fs.callbacks import DEFAULT_CALLBACK
  from dvc.log import logger
  from dvc.utils.objects import cached_property
label_desc: Use image node_id 1 to create a new Index object  with example: obj = Index(repo, stages, metrics, plots, params, artifacts)