The row index that marks the bottom extent of the vertical span of
        this cell. This is one greater than the index of the bottom-most row
        of the span, similar to how a slice of the cell's rows would be
        specified.

def bottom(self):
        """
        The row index that marks the bottom extent of the vertical span of
        this cell. This is one greater than the index of the bottom-most row
        of the span, similar to how a slice of the cell's rows would be
        specified.
        """
        if self.vMerge is not None:
            tc_below = self._tc_below
            if tc_below is not None and tc_below.vMerge == ST_Merge.CONTINUE:
                return tc_below.bottom
        return self._tr_idx + 1