code: @Override
      @Path("/{documentId}")
      public JSONObject get(String path, Map<String,String> headers)
      throws ServiceException, JSONException {
          WorkflowServices workflowServices = ServiceLocator.getWorkflowServices();
          String docId = getSegment(path, 1);
          if (docId == null) {
              throw new ServiceException(ServiceException.BAD_REQUEST, "Invalid path: " + path);
          }
          try {
              JSONObject json = new JSONObject();
              json.put("value", workflowServices.getDocumentStringValue(Long.valueOf(docId)));
              return json;
          }
          catch (NumberFormatException e) {
              throw new ServiceException(ServiceException.BAD_REQUEST, "Invalid path: " + path, e);
          }
      }
docs: Retrieve a document string value