Returns the last n rows.

        Args:
            n: Integer containing the number of rows to return.

        Returns:
            DataManager containing the last n rows of the original DataManager.

def tail(self, n):
        """Returns the last n rows.

        Args:
            n: Integer containing the number of rows to return.

        Returns:
            DataManager containing the last n rows of the original DataManager.
        """
        # See head for an explanation of the transposed behavior
        if n < 0:
            n = max(0, len(self.index) + n)
        if self._is_transposed:
            result = self.__constructor__(
                self.data.transpose().take(1, -n).transpose(),
                self.index[-n:],
                self.columns,
                self._dtype_cache,
            )
            result._is_transposed = True
        else:
            result = self.__constructor__(
                self.data.take(0, -n), self.index[-n:], self.columns, self._dtype_cache
            )
        return result