function nullFormRenameControl(control, name) {
  control.$name = name;
}
@ngdoc directive
@name ngOpen
@restrict A
@priority 100

@description

Sets the `open` attribute on the element, if the expression inside `ngOpen` is truthy.

A special directive is necessary because we cannot use interpolation inside the `open`
attribute. See the {@link guide/interpolation interpolation guide} for more info.

## A note about browser compatibility

Edge, Firefox, and Internet Explorer do not support the `details` element, it is
recommended to use {@link ng.ngShow} and {@link ng.ngHide} instead.

@example
     <example>
       <file name="index.html">
         <label>Check me check multiple: <input type="checkbox" ng-model="open"></label><br/>
         <details id="details" ng-open="open">
            <summary>Show/Hide me</summary>
         </details>
       </file>
       <file name="protractor.js" type="protractor">
         it('should toggle open', function() {
           expect(element(by.id('details')).getAttribute('open')).toBeFalsy();
           element(by.model('open')).click();
           expect(element(by.id('details')).getAttribute('open')).toBeTruthy();
         });
       </file>
     </example>

@element DETAILS
@param {expression} ngOpen If the {@link guide/expression expression} is truthy,
    then special attribute "open" will be set on the element