/**
     * Creates a new message builder.
     * @return a new message builder
     */
    @Nonnull
    MessageBuilder builder();

    /**
     * Creates a new message builder of the specified size.
     * @param size the initial size of the message builder buffer
     * @return a new message builder
     */
    @Nonnull
    MessageBuilder builder(int size);

        return builder()
                .session(nonNull(session, "session cannot be null"))
                .artifactCoordinate(nonNull(artifactCoordinate, "artifactCoordinate cannot be null"))
                .build();
    }

    @Nonnull
    static VersionResolverRequestBuilder builder() {
        return new VersionResolverRequestBuilder();
    }

    @NotThreadSafe

        return builder()
                .session(nonNull(session, "session cannot be null"))
                .artifactCoordinate(nonNull(artifactCoordinate, "artifactCoordinate cannot be null"))
                .build();
    }

    @Nonnull
    static VersionResolverRequestBuilder builder() {
        return new VersionResolverRequestBuilder();
    }

    @NotThreadSafe

     * {@link BuilderProblem.Severity#WARNING} and below are reported here. Problems with a higher severity level cause
     * the settings builder to fail with a {@link SettingsBuilderException}.
     *
     * @return the problems that were encountered during the settings building, can be empty but never {@code null}
     */
    @Nonnull

     * {@link BuilderProblem.Severity#WARNING} and below are reported here. Problems with a higher severity level cause
     * the settings builder to fail with a {@link ToolchainsBuilderException}.
     *
     * @return the problems that were encountered during the settings building, can be empty but never {@code null}
     */
    @Nonnull

        return read(XmlReaderRequest.builder().path(path).strict(strict).build());
    }

    @Nonnull
    default T read(@Nonnull InputStream input) throws XmlReaderException {
        return read(input, true);
    }

    @Nonnull
    default T read(@Nonnull InputStream input, boolean strict) throws XmlReaderException {
        return read(XmlReaderRequest.builder().inputStream(input).strict(strict).build());
    }

 * is meant for exclusive consumption by the model builder and is opaque to the cache implementation. The cache key is
 * formed by a combination of group id, artifact id, version and tag. The first three components generally refer to the
 * identity of a model. The tag allows for further classification of the associated data on the sole discretion of the
 * model builder.
 *
 */
public interface ModelCache {

    @Nonnull
    static ToolchainsBuilderRequest build(
            @Nonnull Session session, @Nullable Source globalToolchainsSource, @Nullable Source userToolchainsSource) {
        return builder()
                .session(nonNull(session, "session cannot be null"))
                .globalToolchainsSource(globalToolchainsSource)
                .userToolchainsSource(userToolchainsSource)
                .build();

        return builder()
                .session(nonNull(session, "session cannot be null"))
                .source(nonNull(source, "source cannot be null"))
                .build();
    }

    @Nonnull
    static ProjectBuilderRequest build(@Nonnull Session session, @Nonnull Path path) {
        return builder()
                .session(nonNull(session, "session cannot be null"))

            @Nonnull Session session,
            @Nullable Source globalSettingsSource,
            @Nullable Source projectSettingsSource,
            @Nullable Source userSettingsSource) {
        return builder()
                .session(nonNull(session, "session cannot be null"))
                .globalSettingsSource(globalSettingsSource)
                .projectSettingsSource(projectSettingsSource)