Return a newly-created `w:inline` element.

        The element contains the image specified by *image_descriptor* and is scaled
        based on the values of *width* and *height*.

def new_pic_inline(self, image_descriptor, width, height):
        """Return a newly-created `w:inline` element.

        The element contains the image specified by *image_descriptor* and is scaled
        based on the values of *width* and *height*.
        """
        rId, image = self.get_or_add_image(image_descriptor)
        cx, cy = image.scaled_dimensions(width, height)
        shape_id, filename = self.next_id, image.filename
        return CT_Inline.new_pic_inline(shape_id, rId, filename, cx, cy)