Rails: rubocop disable Class has too many lines error

I have a class with constants, many constants. And rubocop is complaining about the length of this Class, which I don't care how long it gets. I want to disable rubocop's error: "Class has too many lines" but the following is not working: ``` # rubocop:disable ClassLength ``` Also, the following isn't either: ``` # rubocop:disable Metrics/ClassLength ``` What is the correct metric that I need to disable?