code: def convert(self, values, nan_rep, encoding, errors):
          
  
          # values is a recarray
          if values.dtype.fields is not None:
              values = values[self.cname]
  
          values = _maybe_convert(values, self.kind, encoding, errors)
  
          kwargs = dict()
          if self.freq is not None:
              kwargs['freq'] = _ensure_decoded(self.freq)
          if self.index_name is not None:
              kwargs['name'] = _ensure_decoded(self.index_name)
          # making an Index instance could throw a number of different errors
          try:
              self.values = Index(values, **kwargs)
          except Exception:  # noqa: E722
  
              # if the output freq is different that what we recorded,
              # it should be None (see also 'doc example part 2')
              if 'freq' in kwargs:
                  kwargs['freq'] = None
              self.values = Index(values, **kwargs)
  
          self.values = _set_tz(self.values, self.tz)
  
          return self
docs: set the values from this selection: take = take ownership