docs: def createSeparatorItem( self ):
          """
          Creates a new separator item.
          
          :return     <QTreeWidgetItem>
          """
          item = QTreeWidgetItem(['                                    '])
          font = item.font(0)
          font.setStrikeOut(True)
          item.setFont(0, font)
          item.setData(0, Qt.UserRole, wrapVariant('separator'))
          flags = item.flags()
          flags ^= Qt.ItemIsDropEnabled
          item.setFlags(flags)
          
          return item