code: def exist_role_name(app, delete_role_if_exists):
      role_name = "test_roles_create_role_new"
      app.appbuilder.sm.add_role(role_name)
      yield role_name
      delete_role_if_exists(role_name)
  
imports: from __future__ import annotations
  import datetime
  import json
  import pytest
  from airflow.jobs.job import Job
  from airflow.jobs.scheduler_job_runner import SchedulerJobRunner
  from airflow.utils import timezone
  from airflow.utils.session import create_session
  from airflow.www import app
  from tests.test_utils.asserts import assert_queries_count
  from tests.test_utils.config import conf_vars
  from tests.test_utils.www import check_content_in_response, check_content_not_in_response
label_desc: Use image node_id 13 for calling a global function with example usage: exist_role_name(app, delete_role_if_exists) without return types