The event type of conversions that are attributed to.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v26/enums/conversion_attribution_event_type.proto)

| Enums ||
|---|---|
| ## `CLICK` | The conversion is attributed to a click. |
| ## `ENGAGED_VIEW` | The conversion is attributed to a 10s engaged view. |
| ## `IMPRESSION` | The conversion is attributed to an impression. |
| ## `INTERACTION` | The conversion is attributed to an interaction. |
| ## `UNKNOWN` | Represents value unknown in this version. |
| ## `UNSPECIFIED` | Not specified. |