RunsEventSummary

Field	Type	Description
`runId`	`ID!`
`total`	`Float!`
`errorCount`	`Float!`
`firstEventId`	`Float`
`lastEventId`	`Float`
`firstEventAt`	`String`
`lastEventAt`	`String`
`byEventClass`	`RunsEventSummaryByEventClass!`
`byEventType`	`[RunsEventSummaryByEventType!]!`
`buckets`	`[RunsEventSummaryBuckets!]!`	Half-open time buckets `[start, end)` covering `first_event_at` through `last_event_at + 1 ms`. Boundaries use whole milliseconds; widths differ by at most 1 ms. Boundaries can be passed directly as the event-list `start` and `end` filters. The bucket count cannot exceed the span in milliseconds. Empty if no events match.