StripeUserModelMirrorRefPath typedef
StripeUserModelMirrorRefPath = _$StripeUserModelMirrorRefPath
It can be defined as an empty ModelRef<StripeUserModel>.
StripeUserModelMirrorRefPath("xxx") // Define as a path.
Implementation
typedef StripeUserModelMirrorRefPath = _$StripeUserModelMirrorRefPath;