create
suspend fun create(startEventContent: VerificationStartEventContent.SasStartEventContent, weStartedVerification: Boolean, ownUserId: UserId, ownDeviceId: String, theirUserId: UserId, theirDeviceId: String, relatesTo: RelatesTo.Reference?, transactionId: String?, sendVerificationStep: suspend (step: VerificationStep) -> Unit, keyStore: KeyStore, keyTrustService: KeyTrustService, json: Json, driver: CryptoDriver): ActiveSasVerificationMethod?