class_docstr: Tracker which sources information from .pickle files providing
  configurations of ensemble members and the ensembles' performances.
class_docstr_tok: ["Tracker","which","sources","information","from",".pickle","files","providing","configurations","of","ensemble","members","and","the","ensembles","'","performances","."]
docstr: Returns the unique configurations of ensembles provided by this
  tracker.
docstr_tok: ["Returns","the","unique","configurations","of","ensembles","provided","by","this","tracker","."]
code: def unique_ensembles(self) -> List[EnsembleConfig]:
      """
      Returns the unique configurations of ensembles provided by this
      tracker.
      """
      return list({c.model for c in self.performance_map})
  
file_path: gluonts/src/gluonts/nursery/tsbench/src/tsbench/evaluations/tracking/ensemble.py
imports: import os
  import pickle
  from pathlib import Path
  from typing import Dict, List
  from tsbench.config import Config, EnsembleConfig
  from tsbench.evaluations.metrics import Performance
  from ._base import Tracker
  from ._evaluations import Evaluations
label_desc: Use image node_id 2 for calling the EnsembleTracker obj's underlying member method code with example usage: obj.unique_ensembles() and returns: list