Matrix
fun MatrixClientServerApiClientImpl(baseUrl: Url? = null, onLogout: suspend (isSoft: Boolean) -> Unit = {}, eventContentSerializerMappings: EventContentSerializerMappings = DefaultEventContentSerializerMappings, json: Json = createMatrixEventJson(eventContentSerializerMappings), httpClientFactory: (HttpClientConfig<*>.() -> Unit) -> HttpClient = { HttpClient(it) })