| `if`             | no       | -        | Conditionally execute this processor.
| `on_failure`     | no       | -        | Handle failures for this processor. See <<handling-failure-in-pipelines>>.
| `ignore_failure` | no       | `false`  | Ignore failures for this processor. See <<handling-failure-in-pipelines>>.
| `tag`            | no       | -        | An identifier for this processor. Useful for debugging and metrics.
// TODO: See <<ingest-conditionals>>. <-- for the if description once PR 35044 is merged