IssueTracker

Consider the following existing API:

interface A { val i: Int }
class Foo : A { override val i: Int = 0 }

When you change this to

interface A { val i: Int }
class Bar : A {
    override val i: Int = 0
}

class Foo(a: A) : A by a {
    constructor() : this(Bar())
}

and run ./gradlew updateApi, you get the following error:

error: Method com.example.Foo.getI has changed 'abstract' qualifier [ChangedAbstract]

Reproduce this by:

1. Checkout ToT of AndroidX
2. git am 0001-Setup-Api-Files.patch (see attached file)
   This adds the "existing API" from the example to the current and 1.1.0-beta05 api files of ui-test-junit4 to setup the example.
3. git apply Implement-By-Delegation.patch (see attached file)
   This applies the changes from the example
4. ./gradlew compose:ui:ui-test-junit4:updateApi