sequenceNullable

fun <A, B> Either<A, B?>.sequenceNullable(): Either<A, B>?
fun <A, B> Ior<A, B?>.sequenceNullable(): Ior<A, B>?
fun <A> Iterable<A?>.sequenceNullable(): List<A>?
fun <A, B> Validated<A, B?>.sequenceNullable(): Validated<A, B>?