docstr: Get DagBag and print statistic into the log.
docstr_tok: ["Get","DagBag","and","print","statistic","into","the","log","."]
code: def get_dagbag(dag_folder):
      """Get DagBag and print statistic into the log."""
      dagbag = DagBag(dag_folder=dag_folder, include_examples=False)
      logger.info("Loaded DAGs:")
      logger.info(dagbag.dagbag_report())
      return dagbag
  
imports: from __future__ import annotations
  import contextlib
  import logging
  import os
  import subprocess
  import sys
  import tempfile
  from pathlib import Path
  import pytest
  from airflow.configuration import conf
  from airflow.jobs.backfill_job_runner import BackfillJobRunner
  from airflow.jobs.job import Job, run_job
  from airflow.models import DagBag, DagRun, TaskInstance
  from airflow.utils.db import add_default_pool_if_not_exists
  from airflow.utils.state import State
  from airflow.utils.timezone import datetime
  from airflow.utils.types import DagRunType
  from tests.test_utils import db
label_desc: Use image node_id 2 for calling the BaseImpersonationTest obj's underlying member method code with example usage: obj.get_dagbag(dag_folder) and returns: dagbag