docs: public Set<String> getIndices(final IndexSet indexSet, final String... statusFilter) {
          final List<String> status = Arrays.asList(statusFilter);
          final Cat catRequest = new Cat.IndicesBuilder()
                  .addIndex(indexSet.getIndexWildcard())
                  .setParameter("h", "index,status")
                  .build();
  
          final CatResult result = JestUtils.execute(jestClient, catRequest,
                  () -> "Couldn't get index list for index set <" + indexSet.getConfig().id() + ">");
  
          return StreamSupport.stream(result.getJsonObject().path("result").spliterator(), false)
                  .filter(cat -> status.isEmpty() || status.contains(cat.path("status").asText()))
                  .map(cat -> cat.path("index").asText())
                  .collect(Collectors.toSet());
      }