public String nonFinalField = "some";
                    public final String finalField = "some";
                    public String foo() { return "bar"; }
                }
            """,
            v2 = """
                public class Source {
                    @Nullable public String nonFinalField = null;
                    @Nullable public final String finalField = null;

        checkBinaryCompatibleKotlin(
            v1 = existingSource,
            v2 = internalSource
        ).assertEmptyReport()
    }

    @Test
    fun `existing internal members made public appear as added`() {

        checkNotBinaryCompatibleKotlin(
            v1 = internalSource,
            v2 = publicSource
        ).apply {
            assertHasErrors(

                interface Source {
                    infix fun String.plus(some: List<Int>): String
                    operator fun Int.plus(some: List<Int>): Int
                }
            """,
            v2 = """
                fun Int.invoke(some: Int) {}
                operator fun Boolean.invoke(some: Int) {}

                operator fun String.invoke(some: Int) {}
                fun Long.invoke(some: Int) {}

        checkBinaryCompatibleJava(
            v1 = """
                public class Source {
                    public void some() {}
                }
            """,
            v2 = """
                public class Source {
                    public void some() {
                        Runnable anon = new Runnable() {
                            @Override