treat changes of return type as a breaking change

[ifndefdeadmau5]

someQuery(
where: WhereInput!
- ): [Payload!]!
+ ): [Payload]

I see above change as a breaking change, but by default graphql-inspector categorize it into safe changes,
how do I change this behavior? adding custom rule looked promising, but I have no idea where to start with current documentation :/