function TabPane(props, context) {
	    (0, _classCallCheck3['default'])(this, TabPane);

	    var _this = (0, _possibleConstructorReturn3['default'])(this, _React$Component.call(this, props, context));

	    _this.handleEnter = _this.handleEnter.bind(_this);
	    _this.handleExited = _this.handleExited.bind(_this);

	    _this['in'] = false;
	    return _this;
	  }
We override the `<TabContainer>` context so `<Nav>`s in `<TabPane>`s don't
conflict with the top level one.