`equals`/`hashCode`/`toString` don't necessarily come from `Any` - they
might be overridden in the abstract class like this:
```kt
abstract class Base {
// reinforces overriding in inheritors
abstract override equals(a: Any?): Boolean
// implementation will be replaced by the generated for data class
override hashCode(): Int = 0
// implementation is final, compiler will not replace it
final override toString(): String = ""
}
```
Roman Golyshev
3091269035