waitUntilCompositeAlarmExists
suspend fun CloudWatchClient.waitUntilCompositeAlarmExists(request: DescribeAlarmsRequest = DescribeAlarmsRequest { }): Outcome<DescribeAlarmsResponse>
suspend fun CloudWatchClient.waitUntilCompositeAlarmExists(block: DescribeAlarmsRequest.Builder.() -> Unit): Outcome<DescribeAlarmsResponse>