assertTrue(mockConfig.getApiPingEsFieldSet().contains("number_of_nodes"));
        assertTrue(mockConfig.getApiPingEsFieldSet().contains("number_of_data_nodes"));
        assertTrue(mockConfig.getApiPingEsFieldSet().contains("active_primary_shards"));
        assertTrue(mockConfig.getApiPingEsFieldSet().contains("active_shards"));
        assertTrue(mockConfig.getApiPingEsFieldSet().contains("relocating_shards"));

                .get(stream -> stream.filter(StringUtil::isNotBlank).map(String::trim).toArray(n -> new String[n]));
    }

    String getApiPingSearchEngineFields();

    default Set<String> getApiPingEsFieldSet() {
        Set<String> value = (Set<String>) propMap.get(API_PING_SEARCH_ENGINE_FIELD_SET);
        if (value == null) {
            value = split(getApiPingSearchEngineFields(), ",")