code: public List<Call> getBridgeCalls() throws Exception {
          final String callsPath = StringUtils.join(new String[]{
                  getUri(),
                  "calls"
          }, '/');
          final JSONArray jsonArray = toJSONArray(client.get(callsPath, null));
  
          final List<Call> callList = new ArrayList<Call>();
          for (final Object obj : jsonArray) {
              callList.add(new Call(client, (JSONObject) obj));
          }
          return callList;
      }
docs: Gets list of calls that are on the bridge
  
  @return list of calls
  @throws IOException unexpected error.