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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _get_next_buffered_row(self):
 """ Get the next row for iteration. """

        if self._iter_row == self._iter_nrows:
            raise StopIteration

        if self._row_buffer_index >= self._iter_row_buffer:
            self._buffer_iter_rows(self._iter_row)

        data = self._row_buffer[self._row_buffer_index]
        self._iter_row += 1
        self._row_buffer_index += 1
        return data