*
     * @return version of the platform where the code will be executed, or {@code null} for default
     *
     * @see SourceRoot#targetVersion()
     */
    @Nullable
    Version getTargetVersion();

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

    @Nonnull