'Set the join style to be one of (\'miter\', \'round\', \'bevel\')'

def set_joinstyle(self, js):

    if (js in (u'miter', u'round', u'bevel')):
        self._joinstyle = js
    else:
        raise ValueError((u'Unrecognized    join    style.        Found    %s' % js))
