docs: public List<User> getUserList(boolean concise, int start, int amount) {
          ClientResource resource = new ClientResource(Route.ALL_USER.url());
          Reference ref = resource.getReference();
  
          Map<String, Object> param = new HashMap<>();
          param.put("concise", concise);
          param.put("start", start);
          param.put("amount", amount);
  
          Route.addParameters(ref, param);
  
          resource.setChallengeResponse(this.auth.toChallenge());
  
          try {
              Representation repr = resource.get();
              return mapper.readValue(repr.getText(), new TypeReference<List<User>>() {});
          } catch (IOException ex) {
              LEX4JLogger.log(Level.WARNING, "Could not retrieve user list correctly!");
              return null;
          }
      }