waitUntilInstanceExists
suspend fun Ec2Client.waitUntilInstanceExists(request: DescribeInstancesRequest = DescribeInstancesRequest { }, retryStrategy: <Error class: unknown class>? = null): <Error class: unknown class><DescribeInstancesResponse>
suspend fun Ec2Client.waitUntilInstanceExists(block: DescribeInstancesRequest.Builder.() -> Unit): <Error class: unknown class><DescribeInstancesResponse>