code: def get_ti(dr, task_id):
      return next(
          ti for ti in dr.task_instances if ti.task_id == task_id
      )
  
imports: from __future__ import annotations
  from datetime import datetime
  from typing import TYPE_CHECKING, Iterator
  from unittest import mock
  from unittest.mock import Mock
  import pytest
  from airflow.decorators import task, task_group
  from airflow.models.baseoperator import BaseOperator
  from airflow.models.taskinstance import TaskInstance
  from airflow.operators.empty import EmptyOperator
  from airflow.ti_deps.dep_context import DepContext
  from airflow.ti_deps.deps.trigger_rule_dep import TriggerRuleDep, _UpstreamTIStates
  from airflow.utils.state import DagRunState, TaskInstanceState
  from airflow.utils.trigger_rule import TriggerRule
label_desc: Use image node_id 1 for calling the TestTriggerRuleDepSetupConstraint obj's underlying member method code with example usage: obj.get_ti(dr, task_id) and returns: next