> ## Documentation Index
> Fetch the complete documentation index at: https://docs.devin.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# CognitionAcp.CognitionTimelineObservationMeta

> The identity every timeline observation carries: which Devin event it stands for, and when.

The identity every timeline observation carries: which Devin event it
stands for, and when. Also the whole payload of an observation with no
per-type fields (an empty `progress_update`).

```typescript
type CognitionTimelineObservationMeta = void
```


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