<uap5:MixedRealityModel
Path = 'A string with a value between 1 and 256 characters in length that ends with ".glb" and cannot contain these characters: <, >, :, ", |, ?, or *. In this string, the / and \ characters cannot be the first or last characters. Also, the string can contain / or \ but not both.' >
<!-- Child elements -->
uap6:SpatialBoundingBox?
</uap5:MixedRealityModel>