public MetricValuesSpec()
{
_collector = CreateMetricsCollector();
_node1 = new NodeMetrics(new Address("akka.tcp", "sys", "a", 2554), 1, _collector.Sample().Metrics);
_node2 = new NodeMetrics(new Address("akka.tcp", "sys", "a", 2555), 1, _collector.Sample().Metrics);
}