Update custom role
Update a single custom role. Updating a custom role uses a [JSON patch](https://datatracker.ietf.org/doc/html/rfc6902) or [JSON merge patch](https://datatracker.ietf.org/doc/html/rfc7386) representation of the desired changes. To learn more, read [Updates](https://launchdarkly.com/docs/api#updates).<br/><br/>To add an element to the `policy` array, set the `path` to `/policy` and then append `/<array index>`. Use `/0` to add to the beginning of the array. Use `/-` to add to the end of the array.