onFailureHandler

fun <T> ERROR CLASS: Symbol not found for Consumer<ERROR CLASS: Symbol not found for Result<T>>.onFailureHandler(mapper: (ERROR CLASS: Symbol not found for NSError??) -> Throwable = { error: NSError? -> if (error is KMPError) { PubNubException(error.statusCode().toInt(), error.localizedDescription, null) } else { PubNubException(errorMessage = error?.localizedDescription) } }): (ERROR CLASS: Symbol not found for NSError??) -> Unit