"Constructor com.example.Source(java.util.List): Parameter 0 from null accepting to non-null accepting breaking change."
            )
            assertHasNoWarning()
            assertHasNoInformation()
        }
    }

    @Test
    fun `from null array returning to non-null returning is not breaking`() {

        // v1-->v2
        graph.addEdge(v1, v2, new MetadataGraphEdge("1.1", true, null, null, 2, 1));
        graph.addEdge(v1, v2, new MetadataGraphEdge("1.2", true, null, null, 2, 2));

        // v1-->v3
        graph.addEdge(v1, v3, new MetadataGraphEdge("1.1", true, null, null, 2, 1));
        graph.addEdge(v1, v3, new MetadataGraphEdge("1.2", true, null, null, 4, 2));

        // v3-->v4

     * @param repositories The plugin repositories to use for resolving the plugin's main artifact, must not be {@code
     *            null}.
     * @param session The repository session to use for resolving the plugin's main artifact, must not be {@code null}.
     * @return The plugin descriptor, never {@code null}.
     */
    PluginDescriptor getPluginDescriptor(

@SuppressSignatureCheck
sealed class ConnectionEvent {
  abstract val timestampNs: Long
  open val connection: Connection?
    get() = null

  /** Returns if the event closes this event, or null if this is no open event. */
  open fun closes(event: ConnectionEvent): Boolean? = null

  val name: String
    get() = javaClass.simpleName

  data class ConnectStart(
    override val timestampNs: Long,
    val route: Route,

  override fun apply(
    base: Statement,
    description: Description,
  ): Statement =
    object : Statement() {
      override fun evaluate() {
        beforeEach(null)
        try {
          base.evaluate()
        } finally {
          afterEach(null)
        }
      }
    }

  fun takeAll(): List<String> {
    val list = mutableListOf<String>()
    logs.drainTo(list)
    return list
  }

    }

    @Override
    public String getGroupId() {
        return groupId;
    }

    @Override
    public String getArtifactId() {
        return null;
    }

    @Override
    public String getBaseVersion() {
        return null;
    }

    public void addPluginMapping(String goalPrefix, String artifactId) {
        addPluginMapping(goalPrefix, artifactId, artifactId);
    }

     *
     * @param session The currently active session, may be {@code null}.
     */
    void setSession(MavenSession session);

    /**
     * Gets the currently active session.
     *
     * @return The currently active session or {@code null} if none.
     */
    MavenSession getSession();

    /**
     * Gets the currently active repository session.
     *

        OldSuperInternal returnTypeOverridenMethod() { return null }
    }

    static class OldBase extends OldSuperInternal {
        void anotherPublicMethod() {}

        OldBase returnTypeOverridenMethod() { return null }
    }

    static class OldSub extends OldBase {
        OldSub returnTypeOverridenMethod() { return null }
    }

    static class NewSuperInternal {}

        if (cacheRecord != null && cacheRecord.getException() != null) {
            throw cacheRecord.getException();
        }

        return cacheRecord;
    }

    @Override
    public CacheRecord put(Key key, List<Artifact> pluginArtifacts) {
        Objects.requireNonNull(pluginArtifacts, "pluginArtifacts cannot be null");

        assertUniqueKey(key);

  private Entry<K, V> presentKeyNullValueEntry;

  @Override
  public void setUp() throws Exception {
    super.setUp();
    nullKeyEntry = entry(null, v3());
    nullValueEntry = entry(k3(), null);
    nullKeyValueEntry = entry(null, null);
    presentKeyNullValueEntry = entry(k0(), null);
  }

  @MapFeature.Require(SUPPORTS_PUT)
  @CollectionSize.Require(absent = ZERO)
  public void testPut_supportedPresent() {