def METHOD_NAME(self):
    """Prepare records to be removed for each review app Site"""
    app_name = os.environ.get("HEROKU_APP_NAME")
    heroku = heroku3.from_key(HEROKU_API_KEY)
    app = heroku.apps()[app_name]
    heroku_domains = app.domains()
    cloudflare = CloudflareAPI()
    existing_records = cloudflare.get_records(zone=CLOUDFLARE_ZONE_ID)
    existing_records_by_name = {record["name"]: record["id"] for record in existing_records}
    for domain in heroku_domains:
        record_id = existing_records_by_name.get(domain.hostname)
        cloudflare.delete_record(zone=CLOUDFLARE_ZONE_ID, record_id=record_id)