The result is a bunch of never used indicators...
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It's actually fairly simple to just go and disable inspection for unused methods globally - in Preferences go to Editor > Inspections > Java > Declaration redundancy > Unused declaration and untick Methods, however that's not what I'm trying to do here.
There is another obvious answer to how to disable this inspection on a specific method, use the @SuppressWarnings annotation on the method like this...
Java
@SuppressWarnings("unused")
That, ultimately, is what I want to do, but hey I'm lazy and I don't want to have to type this out every time. So there just so happens to be a feature in IntelliJ to add this annotation for you. By clicking on the method name and pressing Alt-Enter (or clicking on that light bulb popup) to bring up the contextual menu you will get this...
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On the Safe delete menu item, press the right arrow on the keyboard (or click that little triangle on the far right) and it will bring up another menu.
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Well, now that's more like it! This new menu gives a whole slew of options for suppressing that inspection. Pick whichever one you need and get on with it! In my case I like to control this suppression on a method-by-method basis so I picked the last option and IntelliJ produced this, as expected...
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Enjoy your warning free SEI!
-i