'A member of the :ref:`WdLineSpacing` enumeration indicating how the
value of :attr:`line_spacing` should be interpreted. Assigning any of
the :ref:`WdLineSpacing` members :attr:`SINGLE`, :attr:`DOUBLE`, or
:attr:`ONE_POINT_FIVE` will cause the value of :attr:`line_spacing`
to be updated to produce the corresponding line spacing.'

@property
def line_spacing_rule(self):

    pPr = self._element.pPr
    if (pPr is None):
        return None
    return self._line_spacing_rule(pPr.spacing_line, pPr.spacing_lineRule)
