def oldNullability = nullabilityOf(oldMethod)
            def newNullability = nullabilityOf(newMethod)

            if (oldNullability == Nullability.NON_NULL && newNullability == Nullability.NULLABLE) {
                errors << "From non-null returning to null returning breaking change"
            } else if (oldNullability == Nullability.NON_NULL && newNullability == Nullability.UNMARKED) {

                }
            """
        ) {
            assertHasNoError()
            assertHasWarnings(
                "Field finalField: Nullability changed from nullable to non-nullable",
                "Method com.example.Source.foo(java.lang.String): Return nullability changed from nullable to non-nullable"
            )
            assertHasNoInformation()
        }
    }

    @Test

testing/architecture-test/src/changes/accepted-changes/accepted-public-api-changes.json
testing/architecture-test/src/changes/archunit-store/internal-api-nullability.txt

# Core automation platform (core/configuration)
platforms/core-configuration/               @gradle/bt-cortex
testing/smoke-ide-test/                     @gradle/bt-cortex

        // This is a function of some sort
        return name.startsWith("kotlin.jvm.functions.Function")
    }

    val ktTypeRawName = ktTypeAsText
        .trimEnd('?') // nullability is not part of JVM types
        .substringBefore('<') // generics are not part of parameter types in JVM method signatures

    val thisTypeAsKt = name.mapJavaTypeToKotlinType()

 *       <i>not</i> the same string ({@code "1.00"}) we started with
 * </ol>
 *
 * <p>Note that it should still be the case that the round-tripped and original objects are
 * <i>similar</i>.
 *
 * <h3>Nullability</h3>
 *
 * <p>A converter always converts {@code null} to {@code null} and non-null references to non-null
 * references. It would not make sense to consider {@code null} and a non-null reference to be