public Map<String, String> clientTags() {
        return data.clientTags().stream()
            .collect(
                Collectors.toMap(
                    clientTag -> new String(clientTag.key(), StandardCharsets.UTF_8),
                    clientTag -> new String(clientTag.value(), StandardCharsets.UTF_8)
                )
            );
    }
@Test
    public void shouldReturnEmptyMapOfClientTagsOnOlderVersions() {
        final SubscriptionInfo info =
            new SubscriptionInfo(10, LATEST_SUPPORTED_VERSION,
                PID_1, "localhost:80", TASK_OFFSET_SUMS, IGNORED_UNIQUE_FIELD, IGNORED_ERROR_CODE, CLIENT_TAGS);

        assertThat(info.clientTags(), is(anEmptyMap()));
    }