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kotlinlang

Is there a binary-compatible way to turn an `object` into an `open class` that has a companion that implements it?

This seems to work fine:
```public abstract class Foo {
  public companion object: Foo() {
    @JvmField
    public val INSTANCE: Foo = this
  }
}```

It's not 100% the same though: if existing Java code looked at `Foo.INSTANCE.getClass()` they would get `Foo.class` with the original code, but after the change it would be `Foo.Companion.class`.

Sure, but I don't think that's a breaking change really since it's reflect-y. I see what you mean though.

it is a binary breaking change, the type of the field is baked into the retrieval