B2G/gecko/browser/devtools/shared/SplitView.jsm
/**
    * Retrieve the active item's details element or null if there is none.
    * @return DOMElement
    */
Retrieve the active item's details element or null if there is none.
Retrieve the active item ' s details element or null if there is none .
get activeDetails()
  {
    let summary = this.activeSummary;
    return summary ? summary.getUserData(BINDING_USERDATA)._details : null;
  }
get activeDetails ( ) { let summary = this . activeSummary ; return summary ? summary . getUserData ( BINDING_USERDATA ) . _details : null ; }
Retrieve the active item's details element or null if there is none.
Retrieve the active item ' s details element or null if there is none .