CmsProfile.media_white_point is not documented (https://github.com/python-pillow/Pillow/blob/main/docs/reference/ImageCms.rst) but implemented: https://github.com/python-pillow/Pillow/blob/af09976a5f57e8aebaedf332bc4025ea1b068af4/src/PIL/_imagingcms.pyi#L89
CmsProfile.media_white_point is not documented (https://github.com/python-pillow/Pillow/blob/main/docs/reference/ImageCms.rst) but implemented:
Pillow/src/PIL/_imagingcms.pyi
Line 89 in af09976