def getWorksheet(self):
        """ Returns the current worksheet from the list. Returns None when
            the iterator reaches the end of the array.
        """
        ws = None
        if self._current_ws_index < len(self._worksheets):
            ws = self._ws_data(self._worksheets[self._current_ws_index])
        return ws
Returns the current worksheet from the list. Returns None when
            the iterator reaches the end of the array.