waitUntilSecurityGroupExists
suspend fun Ec2Client.waitUntilSecurityGroupExists(request: DescribeSecurityGroupsRequest = DescribeSecurityGroupsRequest { }, retryStrategy: RetryStrategy? = null): Outcome<DescribeSecurityGroupsResponse>
suspend fun Ec2Client.waitUntilSecurityGroupExists(block: DescribeSecurityGroupsRequest.Builder.() -> Unit): Outcome<DescribeSecurityGroupsResponse>