[FEATURE] Instance Annotation

[lumiolab]

Before submitting
Please check our wiki because some feature requests are asked a lot and there are good reasons (as explained on the wiki) why we can't (yet) implement them or why we won't implement them.

Describe the feature
I would love if you could annotate a method with something like @InstanceGetter so you can do Class.getInstance().xyz();

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Describe the target audience
Every developer should benefit from this feature.

Additional context
Nothing here.

[janrieke]

If I understand your request correctly, such a method only make sense for singletons. That topic was discussed in #3196, where the maintainers decided against it.