/**
 * The annotated element can be {@code null}.
 *
 * @see Nonnull
 * @since 4.0.0
 */
@Experimental
@Documented
@Retention(RetentionPolicy.RUNTIME)

            """
        ) {
            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

                "Constructor com.example.Source(java.lang.String): Parameter 0 nullability changed from non-nullable to nullable",
                "Method com.example.SourceKt.invoke(com.example.Source,java.lang.String): Parameter 1 nullability changed from non-nullable to nullable"
            )
            assertHasNoInformation()
        }
    }

            @Nonnull Map<String, String> systemProperties,
            @Nonnull Path topDirectory,
            @Nullable Path rootDirectory,
            @Nullable List<CoreExtensions> coreExtensions,
            @Nullable CIInfo ciInfo,
            @Nullable Options options) {
        this.parserRequest = requireNonNull(parserRequest);
        this.parsingFailed = parsingFailed;

 */
public class SystemLogger implements Logger {
    private final PrintWriter out;
    private final Level threshold;

    public SystemLogger(@Nullable OutputStream out) {
        this(out, null);
    }

    public SystemLogger(@Nullable OutputStream out, @Nullable Level threshold) {
        this.out = new PrintWriter(toPsOrDef(out, System.err), true);
        this.threshold = Objects.requireNonNullElse(threshold, Level.INFO);

     * @return The interpolated string, or null if the input was null.
     */
    @Nullable
    String interpolate(
            @Nullable String val,
            @Nullable UnaryOperator<String> callback,
            @Nullable BinaryOperator<String> postprocessor,
            boolean defaultsToEmpty);

    /**

import org.apache.maven.api.annotations.Experimental;
import org.apache.maven.api.annotations.Nullable;

/**
 * A dependency exclusion.
 *
 * @since 4.0.0
 * @see DependencyCoordinates#getExclusions()
 */
@Experimental
public interface Exclusion {
    @Nullable
    String getGroupId();

    @Nullable
    String getArtifactId();

     */
    public static int main(
            String[] args,
            ClassWorld world,
            @Nullable InputStream stdIn,
            @Nullable OutputStream stdOut,
            @Nullable OutputStream stdErr)
            throws IOException {
        return new MavenEncCling(world).run(args, stdIn, stdOut, stdErr, true);
    }

    public MavenEncCling() {

     */
    public static int main(
            String[] args,
            ClassWorld world,
            @Nullable InputStream stdIn,
            @Nullable OutputStream stdOut,
            @Nullable OutputStream stdErr)
            throws IOException {
        return new MavenShellCling(world).run(args, stdIn, stdOut, stdErr, true);
    }

    public MavenShellCling() {

        @Nullable
        private final String modelId;

        ResolvedPathSource(Path path, String location, String modelId) {
            super(path, location);
            this.modelId = modelId;
        }

        @Override
        public Path getPath() {
            return null;
        }

        @Override
        @Nullable
        public String getModelId() {