rem: PluginItem( const KService::Ptr &ptr, QListView *parent, const QString &text ) : QCheckListItem( parent, text, QCheckListItem::CheckBox ),
add: PluginItem( QListView *parent, const KService::Ptr &ptr ) : QListViewItem( parent, ptr->name(), ptr->comment(), ptr->library() ),
context:     PluginItem( const KService::Ptr &ptr, QListView *parent,                const QString &text )      : QCheckListItem( parent, text, QCheckListItem::CheckBox ),        mPtr( ptr )    {    }