code: function updatePropertyFromAttribute(attrName, newValue) {
      var propertyName = camelCase(attrName);
      if (this[propertyName] !== undefined) {
          try {
              this[propertyName] = defaultValue(this[propertyName], newValue);
          } catch (error) {
              // Suppress DOM errors
          }
      }
  }
docs: /* PRIVATE