def polym(self, polys):
        """Creates a POLYGONM shape.
        Polys is a collection of polygons, each made up of a list of xym values.
        Note that for ordinary polygons the coordinates must run in a clockwise direction.
        If some of the polygons are holes, these must run in a counterclockwise direction.
        If the m (measure) value is not included, it defaults to None (NoData)."""
        shapeType = POLYGONM
        self._shapeparts(parts=polys, shapeType=shapeType)
Creates a POLYGONM shape.
        Polys is a collection of polygons, each made up of a list of xym values.
        Note that for ordinary polygons the coordinates must run in a clockwise direction.
        If some of the polygons are holes, these must run in a counterclockwise direction.
        If the m (measure) value is not included, it defaults to None (NoData).