**report a *bug*?**

**What is the current behavior?**

onToggle prop attached to a details html element does not attach the event handler , instead shows a warning "Warning: Unknown prop `onToggle` on `<details>` tag. Remove this prop from the element. For details, see https://fb.me/react-unknown-prop
    in details (created by Details) ...

**If the current behavior is a bug, please provide the steps to reproduce and if possible a minimal demo of the problem via https://jsfiddle.net or similar (template: https://jsfiddle.net/reactjs/69z2wepo/).**

No time right now

**What is the expected behavior?**

-

**Which versions of React, and which browser / OS are affected by this issue? Did this work in previous versions of React?**

Latest

WorkAround:

Use onClick instead, (does not work fire event handler when details is opened with keyboard !)
}
    assertValidProps(this, props);
    
    
    var namespaceURI;
    var parentTag;
    if (hostParent != null) {
      namespaceURI = hostParent._namespaceURI;
      parentTag = hostParent._tag;
    } else if (hostContainerInfo._tag) {
      namespaceURI = hostContainerInfo._namespaceURI;
      parentTag = hostContainerInfo._tag;
    }
    if (namespaceURI == null ||
        namespaceURI === DOMNamespaces.svg && parentTag === 'foreignobject') {
      namespaceURI = DOMNamespaces.html;
    }
    if (namespaceURI === DOMNamespaces.html) {
      if (__DEV__) {
        warning(
          isCustomComponent(this._tag, props) ||
          this._tag === this._currentElement.type,
          '<%s /> is using uppercase HTML. Always use lowercase HTML tags ' +
          'in React.',
          this._currentElement.type
        );
      }
      if (this._tag === 'svg') {
        namespaceURI = DOMNamespaces.svg;
      } else if (this._tag === 'math') {