/**
 * Base class for requests.
 *
 * @since 4.0.0
 */
@Experimental
abstract class BaseRequest<S extends ProtoSession> implements Request<S> {

    private final S session;
    private final RequestTrace trace;

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

    protected BaseRequest(@Nonnull S session, RequestTrace trace) {

                    session, trace, groupId, artifactId, version, classifier, extension, type, coordinateString);
        }

        private static class DefaultArtifactFactoryRequestArtifact extends BaseRequest<Session>
                implements ArtifactCoordinatesFactoryRequest {
            private final String groupId;
            private final String artifactId;
            private final String version;

                    scope,
                    optional,
                    exclusions);
        }

        private static class DefaultDependencyCoordinatesFactoryRequest extends BaseRequest<Session>
                implements DependencyCoordinatesFactoryRequest {
            private final String groupId;
            private final String artifactId;
            private final String version;