@Nullable public final String finalField = null;
                    @Nullable public String foo() { return "bar"; }
                }
            """
        ) {
            assertHasErrors(
                "Field nonFinalField: Nullability breaking change.",
                "Field finalField: From non-nullable to nullable breaking change.",

                    public @$nullUnmarkedAnnotationName String[] baz() { return new String[] {"some", null}; }
                }
            """
        ) {
            assertHasErrors(
                "Method com.example.Source.foo(): From non-null returning to null-unmarked returning breaking change.",

                    val someVal: String? = null
                    var someVar: String? = null
                    fun foo(): String? = null
                }
            """
        ) {
            assertHasErrors(
                "Method com.example.Source.foo(): From non-null returning to null returning breaking change.",
                "Method com.example.Source.getSomeVal(): From non-null returning to null returning breaking change.",

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

        checkNotBinaryCompatibleKotlin(
            v1 = internalSource,
            v2 = publicSource
        ).apply {
            assertHasErrors(
                *reportedMembers.map {
                    added(it.first, it.second)
                }.toTypedArray()
            )
            assertHasNoWarning()
            assertHasNoInformation()

                    operator fun String.plus(some: List<Int>): String
                    infix fun Int.plus(some: List<Int>): Int
                }
            """
        ) {
            assertHasErrors(
                "Method com.example.Source.plus(java.lang.String,java.util.List): Breaking Kotlin modifier change.",
                "Method com.example.Source.plus(int,java.util.List): Breaking Kotlin modifier change.",