def _new_placeholder_pic(self, image_file):
        rId, desc, image_size = self._get_or_add_image(image_file)
        id_, name = self.id, self.name
        pic = CT_Picture.new_ph_pic(id_, name, desc, rId)
        pic.crop_to_fit(image_size, (self.width, self.height))
        return pic
Return a new `p:pic` element depicting the image in *image_file*,
dataset/ETHPy150Open scanny/python-pptx/pptx/shapes/placeholder.py/PicturePlaceholder._new_placeholder_pic