def shape_type(self):
        """
        Unique integer identifying the type of this shape, like
        ``MSO_SHAPE_TYPE.TEXT_BOX``.
        """
        if self.is_placeholder:
            return MSO_SHAPE_TYPE.PLACEHOLDER
        if self._sp.has_custom_geometry:
            return MSO_SHAPE_TYPE.FREEFORM
        if self._sp.is_autoshape:
            return MSO_SHAPE_TYPE.AUTO_SHAPE
        if self._sp.is_textbox:
            return MSO_SHAPE_TYPE.TEXT_BOX
        msg = 'Shape instance of unrecognized shape type'
        raise NotImplementedError(msg)
Unique integer identifying the type of this shape, like
        ``MSO_SHAPE_TYPE.TEXT_BOX``.