import mir.ion.stream: IonValueStream;
import mir.algebraic_alias.json: JsonAlgebraic;
static struct S
{
    double a;
    string s;
}
auto s = S(12.34, "str");
assert(s.serde!JsonAlgebraic.serde!S == s);
assert(s.serde!IonValueStream.serde!S == s);