code: function removeEventListeners(instance) {
      if (instance._options) {
        instance._options.removeEventListener('change', instance._onSelectionChange)
      }
      instance._root.removeEventListener('mouseover', instance._onItemHovered)
      instance._root.removeEventListener('mousedown', instance._onItemSelectionStart)
      instance._root.removeEventListener('mouseup', instance._onItemClicked)
      removeEventListener('mouseup', instance._onSelectionEnd)
    }
docs: Deregisters all event listeners used by the provided szn-options element.
  
  @param {SznElements.SznOptions} instance The szn-options element instance.