def METHOD_NAME(sample_service):
    another_service = create_service(service_name="Another service")
    email_data_retention = insert_service_data_retention(sample_service.id, "email", 3)
    letter_data_retention = insert_service_data_retention(sample_service.id, "letter", 30)
    insert_service_data_retention(another_service.id, "sms", 5)
    list_of_data_retention = fetch_service_data_retention(sample_service.id)
    assert len(list_of_data_retention) == 2
    assert list_of_data_retention[0] == email_data_retention
    assert list_of_data_retention[1] == letter_data_retention