code: function getPropertyKeys(successCallback, errorCallback) {
          return neon.util.ajaxUtils.doGet(
              neon.serviceUrl('propertyservice', '*'), {
                  success: successCallback,
                  error: errorCallback,
                  responseType: 'json'
              }
          );
      }
docs: Gets the list of property keys
  @method getPropertyKeys
  @param {Function} successCallback The callback that contains the array of key names
  @param {Function} errorCallback The optional callback when an error occurs. This is a 3 parameter function that contains the xhr, a short error status and the full error message.
  @return {neon.util.AjaxRequest} The xhr request object