function _handleCollapseEnd() {
      // TODO: When tabbing is used to collapse the search flyout
      //       it will not animate with the below line.
      //       Investigate why this is the case for tab key
      //       but not with mouse clicks.
      _contentDom.classList.add( 'u-invisible' );
    }
/**
     * Event handler for when FlyoutMenu collapse transition ends.
     * Use this to perform post-collapseEnd actions.
     */
Event handler for when FlyoutMenu collapse transition ends.
Use this to perform post-collapseEnd actions.
Event handler for when FlyoutMenu collapse transition ends . Use this to perform post - collapseEnd actions .
function _handleCollapseEnd() {
      _contentDom.classList.add( 'u-invisible' );
    }
function _handleCollapseEnd ( ) { _contentDom . classList . add ( 'u-invisible' ) ; }
Event handler for when FlyoutMenu collapse transition ends.
Event handler for when FlyoutMenu collapse transition ends .
// TODO: When tabbing is used to collapse the search flyout //       it will not animate with the below line. //       Investigate why this is the case for tab key //       but not with mouse clicks.