def METHOD_NAME(subscriber_builder: Callable[[Mapping], Subscriber]):
    subscriber_a = subscriber_builder(
        {
            NAMESPACE_REF: "some_namespace",
            TARGET_FILE_PATH: "some_saas",
            DESIRED_REF: "new",
            DESIRED_TARGET_HASHES: [
                ConfigHash(channel="a", target_config_hash="b", parent_saas="c"),
                ConfigHash(channel="e", target_config_hash="f", parent_saas="g"),
            ],
        }
    )
    subscriber_b = subscriber_builder(
        {
            NAMESPACE_REF: "some_namespace",
            TARGET_FILE_PATH: "some_other_saas",
            DESIRED_REF: "new",
            DESIRED_TARGET_HASHES: [
                ConfigHash(channel="a", target_config_hash="b", parent_saas="c"),
            ],
        }
    )
    assert Subscriber.combined_content_hash(
        [subscriber_a]
    ) != Subscriber.combined_content_hash([subscriber_b])