MatrixClientServerApiBaseClient
constructor(authProvider: MatrixClientAuthProvider, eventContentSerializerMappings: EventContentSerializerMappings = EventContentSerializerMappings.default, json: Json = createMatrixEventJson(eventContentSerializerMappings), asUserId: UserId? = null, asDeviceId: String? = null, httpClientEngine: HttpClientEngine? = null, httpClientConfig: HttpClientConfig<*>.() -> Unit? = null)