The type of experiment metric direction.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v25/enums/experiment_metric_direction.proto)

| Enums ||
|---|---|
| ## `DECREASE` | The goal of the experiment is to decrease the metric. |
| ## `INCREASE` | The goal of the experiment is to increate the metric. |
| ## `NO_CHANGE` | The goal of the experiment is to not change the metric. |
| ## `NO_CHANGE_OR_DECREASE` | The goal of the experiment is to either not change or decrease the metric. |
| ## `NO_CHANGE_OR_INCREASE` | The goal of the experiment is to either not change or increase the metric. |
| ## `UNKNOWN` | The value is unknown in this version. |
| ## `UNSPECIFIED` | Not specified. |