code: func (ms *MetricSender) SendContainerMetric(applicationId string, instanceIndex int32, cpuPercentage float64, memoryBytes uint64, diskBytes uint64) error {
  	return ms.eventEmitter.Emit(&events.ContainerMetric{ApplicationId: &applicationId, InstanceIndex: &instanceIndex, CpuPercentage: &cpuPercentage, MemoryBytes: &memoryBytes, DiskBytes: &diskBytes})
  }
docs: // SendContainerMetric sends a metric that records resource usage of an app in a container.
  // The container is identified by the applicationId and the instanceIndex. The resource
  // metrics are CPU percentage, memory and disk usage in bytes. Returns an error if one occurs
  // when sending the metric.