This is driving me nuts - I could have sworn that IntelliJ had a feature that could find extension methods and auto-complete them in Java, including when they're defined in Java (i.e. it recognized the static utility class pattern). I remember reading the blog posts about it and everything. But now no matter what I try I can find no trace of this feature, nor the blog posts, nor is there any mention in the docs.
Did I somehow dream an IntelliJ feature and then believe it was real, or is there really a way to do this? I'd love to define extension methods in Java that are postfix completable for both Java and Kotlin users.