cast<RS, RT> method
Provides a StreamTransformer<RS, RT>
view of this stream transformer.
If this transformer already has the desired type, or a subtype,
it is returned directly,
otherwise returns the result of retype<RS, RT>()
.
Implementation
StreamTransformer<RS, RT> cast<RS, RT>() {
StreamTransformer<Object, Object> self = this;
return self is StreamTransformer<RS, RT> ? self : retype<RS, RT>();
}