waitUntilStackExists
suspend fun CloudFormationClient.waitUntilStackExists(request: DescribeStacksRequest = DescribeStacksRequest { }, retryStrategy: RetryStrategy? = null): Outcome<DescribeStacksResponse>
suspend fun CloudFormationClient.waitUntilStackExists(block: DescribeStacksRequest.Builder.() -> Unit): Outcome<DescribeStacksResponse>