function _setExpandedState() {
    _dom.classList.add( BASE_CLASS + '__expanded' );
    _content.setAttribute( 'aria-expanded', 'true' );
    _target.setAttribute( 'aria-pressed', 'true' );
    _setStateTo( EXPANDED );
  }
/**
   * Configure the expanded state appearance.
   */
Configure the expanded state appearance.
Configure the expanded state appearance .
function _setExpandedState() {
    _dom.classList.add( BASE_CLASS + '__expanded' );
    _content.setAttribute( 'aria-expanded', 'true' );
    _target.setAttribute( 'aria-pressed', 'true' );
    _setStateTo( EXPANDED );
  }
function _setExpandedState ( ) { _dom . classList . add ( BASE_CLASS + '__expanded' ) ; _content . setAttribute ( 'aria-expanded' , 'true' ) ; _target . setAttribute ( 'aria-pressed' , 'true' ) ; _setStateTo ( EXPANDED ) ; }
Configure the expanded state appearance.
Configure the expanded state appearance .