docs: function (properties, object, message) {
          YUITest.Assert._increment();
          for (var i=0; i < properties.length; i++){
              if (!(properties[i] in object)){
                  YUITest.Assert.fail(YUITest.Assert._formatMessage(message, "Property '" + properties[i] + "' not found on object."));
              }
          }
      }