Question about custom AccessibilityHierarchyCheck

Hello!

I'm looking into adding a few custom `AccessibilityHierarchyCheck`s for my project, however I noticed that if I want to do that, I have to provide my own subclass of `AccessibilityHierarchyCheckResult`.
Reason is that `AccessibilityHierarchyCheckResult` has a private method, `getChecks()`, which makes sure the check is one of the presets from `AccessibilityCheckPreset.CLASS_TO_HIERARCHY_CHECK`, by calling `AccessibilityCheckPreset.getHierarchyCheckForClass(...)`.

I'm wondering if it's possible to decouple the two: `AccessibilityHierarchyCheckResult` and `AccessibilityCheckPreset`.

I understand that the current pattern makes it possible to instantiate checks only once, and thus allows access to them through a singleton, which, in turns, uses a variation of the service locator pattern. Is it possible, for example, to add another layer of indirection, for example, a singleton called `AccessibilityChecksAggregator`, which can be configured to take in the preset or a custom set of checks before tests run?

P.S.: I'm not adding a Contributor License Agreement since I'm not contributing with any code or any tangible value, at least not yet.