client.admin().indices().prepareGetIndex().addIndices("*").execute().actionGet(suggestSettings.getIndicesTimeout());
        Stream.of(response.getIndices()).filter(s -> {
            if (!isSuggestIndex(s)) {
                return false;
            }
            final List<AliasMetadata> list = response.getAliases().get(s);
            if (list == null) {
                return true;
            }