*/
    public UrlSource(URL url) {
        this.url = Objects.requireNonNull(url, "url cannot be null");
        this.hashCode = Objects.hashCode(url);
    }

    @Override
    public InputStream getInputStream() throws IOException {
        return url.openStream();
    }

    @Override
    public String getLocation() {
        return url.toString();
    }

    /**
     * Gets the URL of this source.
     *

### **4.1 Spark Pi**

Test the Spark installation by running the following compute intensive example, which calculates pi by “throwing darts” at a circle. The program generates points in the unit square ((0,0) to (1,1)) and counts how many points fall within the unit circle within the square. The result approximates pi.

import static org.junit.jupiter.api.Assertions.assertThrows;
import static org.junit.jupiter.api.Assertions.assertTrue;

public class GraphTest {

    @Test
    public void testGraph() throws CycleDetectedException {
        Graph graph = new Graph();
        graph.addVertex("a");
        assertEquals(1, graph.getVertices().size());
        assertEquals("a", graph.getVertex("a").getLabel());

    }

    @Override
    public Future<ProjectSegment> take() throws InterruptedException {
        return null;
    }

    @Override
    public Future<ProjectSegment> poll() {
        return null;
    }

    @Override
    public Future<ProjectSegment> poll(long timeout, TimeUnit unit) throws InterruptedException {
        return null;
    }

 *
 */
@Deprecated
class OperatingSystemProfileActivatorTest extends AbstractProfileActivatorTest<OperatingSystemProfileActivator> {

    @Override
    @BeforeEach
    void setUp() throws Exception {
        activator = new OperatingSystemProfileActivator();
    }

    private Profile newProfile(ActivationOS.Builder activationBuilder) {

import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertTrue;

/**
 */
class PhaseRecorderTest {
    @Test
    void testObserveExecution() throws Exception {
        PhaseRecorder phaseRecorder = new PhaseRecorder(ProjectDependencyGraphStub.A);
        MavenExecutionPlan plan = LifecycleExecutionPlanCalculatorStub.getProjectAExecutionPlan();

    DeployRequest remapDeployArtifacts(RepositorySystemSession session, DeployRequest request);

    void injectTransformedArtifacts(RepositorySystemSession repositorySession, MavenProject currentProject)
            throws IOException;

 */
@FunctionalInterface
public interface MavenPluginPrerequisitesChecker extends Consumer<PluginDescriptor> {
    /**
     *
     * @param pluginDescriptor the plugin descriptor to check
     * @throws IllegalStateException in case the checked prerequisites are not met
     */
    @Override
    void accept(PluginDescriptor pluginDescriptor);

            Class<? extends Scope> ss) {
        injector.bindScope(sa, () -> {
            try {
                return containerProvider.get().lookup(ss);
            } catch (ComponentLookupException e) {
                throw new RuntimeException(e);
            }
        });
    }

    static class BridgeInjectorImpl extends InjectorImpl {
        final Provider<BeanLocator> locator;
        final Binder binder;

    protected Options parseCliOptions(LocalContext context) {
        try {
            return CommonsCliShellOptions.parse(context.parserRequest.args().toArray(new String[0]));
        } catch (ParseException e) {
            throw new IllegalArgumentException("Failed to parse command line options: " + e.getMessage(), e);
        }
    }