// how this struct is updated on heartbeats and can guide customized reporter implementations.
message EventSeries {
  // count is the number of occurrences in this series up to the last heartbeat time.
  optional int32 count = 1;

  // lastObservedTime is the time when last Event from the series was seen before last heartbeat.
  optional k8s.io.apimachinery.pkg.apis.meta.v1.MicroTime lastObservedTime = 2;

// continuously for some time.
message EventSeries {
  // count is the number of occurrences in this series up to the last heartbeat time.
  optional int32 count = 1;

  // lastObservedTime is the time when last Event from the series was seen before last heartbeat.
  optional k8s.io.apimachinery.pkg.apis.meta.v1.MicroTime lastObservedTime = 2;