class_docstr: Lineages of trials for workers in PBT
  
  This class regroup all lineages of trials generated by PBT for a given experiment.
  
  Each lineage is a path from a leaf trial (highest fidelity level) up to the root
  (lowest fidelity level). Multiple lineages can fork from the same root, forming a tree.
  A Lineages object may reference multiple trees of lineages. Iterating a Lineages object will
  iterate on the roots of these trees.
docstr: Get the lineage node corresponding to a given trial.
  
  Parameters
  ----------
  trial: ``orion.core.worker.trial.Trial``
      The trial for which the function should return the corresponding lineage node.
  
  Raises
  ------
  KeyError
      If the base trial is not already registered in the Lineages
docstr_tok: ["Get","the","lineage","node","corresponding","to","a","given","trial",".","Parameters","--","--","--","--","--","trial",":","``","orion.core.worker.trial.Trial","``","The","trial","for","which","the","function","should","return","the","corresponding","lineage","node",".","Raises","--","--","--","KeyError","If","the","base","trial","is","not","already","registered","in","the","Lineages"]
code: def get_lineage(self, trial: Trial) -> LineageNode:
      """Get the lineage node corresponding to a given trial.
  
      Parameters
      ----------
      trial: ``orion.core.worker.trial.Trial``
          The trial for which the function should return the corresponding lineage node.
  
      Raises
      ------
      KeyError
          If the base trial is not already registered in the Lineages
      """
      return self._trial_to_lineages[trial.id]
  
imports: from __future__ import annotations
  import copy
  import logging
  import time
  from typing import Any, ClassVar, Iterable, Sequence
  import numpy
  from orion.algo.base import BaseAlgorithm
  from orion.algo.pbt.exploit import exploit_factory
  from orion.algo.pbt.explore import explore_factory
  from orion.algo.random import Random
  from orion.algo.space import Fidelity, Space
  from orion.core.utils.flatten import flatten
  from orion.core.utils.tree import TreeNode
  from orion.core.worker.transformer import TransformedDimension
  from orion.core.worker.trial import Trial
label_desc: Use image node_id 6 for calling the Lineages obj's underlying member method code with example usage: obj.get_lineage(trial) and returns: self