*/
public class KaSuccessCallInfo(private val backingCall: KaCall) : KaCallInfo() {
    override val token: KaLifetimeToken get() = backingCall.token
    public val call: KaCall get() = withValidityAssertion { backingCall }
}

/**
 * Call that contains errors.
 */
public class KaErrorCallInfo(
    candidateCalls: List<KaCall>,
    diagnostic: KaDiagnostic,
    override val token: KaLifetimeToken,

 */
public sealed class KaCallCandidateInfo(
    candidate: KaCall,
    isInBestCandidates: Boolean,
) : KaLifetimeOwner {
    private val backingCandidate: KaCall = candidate

    override val token: KaLifetimeToken get() = backingCandidate.token
    public val candidate: KaCall get() = withValidityAssertion { backingCandidate }

    /**