code: func (v *List) Data() interface{} {
  	ptr := v.dataRaw()
  	if v.dataWrap != nil {
  		return v.dataWrap(ptr)
  	}
  	return ptr
  }
docs: // DataWrapped acts the same as data struct field, but passes
  // retrieved value before returning through wrap function, set by DataWrapper().
  // If no wrap function is set, it returns raw unsafe.Pointer.