docs: def replace(self, to_replace=None, value=None, inplace=False,
                  limit=None, regex=False, method='pad', axis=None):
          """Replace values given in 'to_replace' with 'value'.
  
          Wrapper around the :meth:`pandas.DataFrame.replace` method.
          """
          if inplace:
              self._frame.replace(to_replace=to_replace, value=value,
                                  inplace=inplace, limit=limit, regex=regex,
                                  method=method, axis=axis)
          else:
              new = self.__class__(self._frame.replace(
                  to_replace=to_replace, value=value, inplace=inplace,
                  limit=limit, regex=regex, method=method, axis=axis))
              new.metadata = self.metadata.copy()
              new._metadata = copy.deepcopy(self._metadata)
              return new