Marks the API that is dependent on the experimental unsigned types, including those types themselves.
Usages of such API will be reported as warnings unless an explicit opt-in with
the OptIn annotation, e.g.
or with the
-Xopt-in=kotlin.ExperimentalUnsignedTypes compiler option is given.
It's recommended to propagate the experimental status to the API that depends on unsigned types by annotating it with this annotation.