docs: def get_person_by_employee_id(self, employee_id):
          """
          Returns a restclients.Person object for the given employee id.  If the
          employee id isn't found, or if there is an error communicating with the
          PWS, a DataFailureException will be thrown.
          """
          if not self.valid_employee_id(employee_id):
              raise InvalidEmployeeID(employee_id)
  
          url = "{}.json?{}".format(
              PERSON_PREFIX, urlencode({"employee_id": employee_id}))
          response = DAO.getURL(url, {"Accept": "application/json"})
  
          if response.status != 200:
              raise DataFailureException(url, response.status, response.data)
  
          # Search does not return a full person resource
          data = json.loads(response.data)
          if not len(data["Persons"]):
              raise DataFailureException(url, 404, "No person found")
  
          regid = data["Persons"][0]["PersonURI"]["UWRegID"]
          return self.get_person_by_regid(regid)