notices within Derivative Works that You distribute, alongside
          or as an addendum to the NOTICE text from the Work, provided
          that such additional attribution notices cannot be construed
          as modifying the License.

      You may add Your own copyright statement to Your modifications and
      may provide additional or different license terms and conditions

          notices within Derivative Works that You distribute, alongside
          or as an addendum to the NOTICE text from the Work, provided
          that such additional attribution notices cannot be construed
          as modifying the License.

      You may add Your own copyright statement to Your modifications and
      may provide additional or different license terms and conditions

          notices within Derivative Works that You distribute, alongside
          or as an addendum to the NOTICE text from the Work, provided
          that such additional attribution notices cannot be construed
          as modifying the License.

      You may add Your own copyright statement to Your modifications and
      may provide additional or different license terms and conditions

          notices within Derivative Works that You distribute, alongside
          or as an addendum to the NOTICE text from the Work, provided
          that such additional attribution notices cannot be construed
          as modifying the License.

      You may add Your own copyright statement to Your modifications and
      may provide additional or different license terms and conditions

          notices within Derivative Works that You distribute, alongside
          or as an addendum to the NOTICE text from the Work, provided
          that such additional attribution notices cannot be construed
          as modifying the License.

      You may add Your own copyright statement to Your modifications and
      may provide additional or different license terms and conditions

 * <p>{@code GwtTestSuiteGenerator} expects every {@code DerivedIterator} implementation to provide
 * a one-arg constructor accepting its inner generator as an argument. This requirement enables it
 * to generate source code (since GWT cannot use reflection to generate the suites).
 *
 * @author Chris Povirk
 */
@GwtCompatible
public interface DerivedGenerator {
  TestSubjectGenerator<?> getInnerGenerator();

 * <p>{@code GwtTestSuiteGenerator} expects every {@code DerivedIterator} implementation to provide
 * a one-arg constructor accepting its inner generator as an argument. This requirement enables it
 * to generate source code (since GWT cannot use reflection to generate the suites).
 *
 * @author Chris Povirk
 */
@GwtCompatible
public interface DerivedGenerator {
  TestSubjectGenerator<?> getInnerGenerator();

            @Nullable Source projectSettingsSource,
            @Nullable Source userSettingsSource) {
        return builder()
                .session(requireNonNull(session, "session cannot be null"))
                .installationSettingsSource(installationSettingsSource)
                .projectSettingsSource(projectSettingsSource)
                .userSettingsSource(userSettingsSource)
                .build();

            Session session, String groupId, String artifactId, String version, String extension) {
        return ArtifactFactoryRequest.builder()
                .session(requireNonNull(session, "session cannot be null"))
                .groupId(groupId)
                .artifactId(artifactId)
                .version(version)
                .extension(extension)
                .build();
    }

    protected BaseRequest(@Nonnull S session) {
        this(session, null);
    }

    protected BaseRequest(@Nonnull S session, RequestTrace trace) {
        this.session = requireNonNull(session, "session cannot be null");
        this.trace = trace;
    }

    @Nonnull
    @Override
    public S getSession() {
        return session;
    }

    @Override
    public RequestTrace getTrace() {