Represents the possible types of adapters a buyer can have.

| Enums ||
|---|---|
| `YIELD_INTEGRATION_TYPE_UNSPECIFIED` | Default value. This value is unused. |
| `CUSTOM_EVENT_MEDIATION` | Custom event mediation integration type |
| `OPEN_BIDDING` | Open bidding integration type |
| `SDK_MEDIATION` | SDK mediation integration type |
| `THIRD_PARTY_SDK_BIDDING` | Third party SDK bidding integration type |