docs: @GetMapping("/destinations")
      public List<Map<String, String>> destinations() {
          List<Map<String, String>> result = new ArrayList<>();
          Set<String> destinations = adapterCanalConfig.DESTINATIONS;
          for (String destination : destinations) {
              Map<String, String> resMap = new LinkedHashMap<>();
              boolean status = syncSwitch.status(destination);
              String resStatus;
              if (status) {
                  resStatus = "on";
              } else {
                  resStatus = "off";
              }
              resMap.put("destination", destination);
              resMap.put("status", resStatus);
              result.add(resMap);
          }
          return result;
      }