return null;
    }

    @Override
    public void xacceptScalarSelectOption(ScalarSelectOption option) {
        // do nothing
    }

    @Override
    public void configure(StatementConfigCall<StatementConfig> confLambda) {
        // do nothing
    }

    @Override
    public StatementConfig getStatementConfig() {
        return null;
    }

    @Override

 * permits per second. Permits will be distributed smoothly, with the delay between individual
 * permits being adjusted to ensure that the configured rate is maintained.
 *
 * <p>It is possible to configure a {@code RateLimiter} to have a warmup period during which time
 * the permits issued each second steadily increases until it hits the stable rate.
 *

 * </ul>
 *
 * <h3>Implementations</h3>
 *
 * <ul>
 *   <li>{@link ImmutableListMultimap}
 *   <li>{@link ImmutableSetMultimap}
 *   <li>Configure your own mutable multimap with {@link MultimapBuilder}
 *   <li>{@link LinkedListMultimap} (for one unusual kind of mutable {@code Multimap})
 * </ul>
 *

  /** Most of the tests in this class run against every one of these caches. */
  private Iterable<LoadingCache<Object, Object>> caches() {
    // lots of different ways to configure a LoadingCache
    CacheBuilderFactory factory = cacheFactory();
    return Iterables.transform(
        factory.buildAllPermutations(),
        new Function<CacheBuilder<Object, Object>, LoadingCache<Object, Object>>() {

        fillMojoDescriptor(session, project, mojoExecution);

        mojoExecutionConfigurator(mojoExecution)
                .configure(project, mojoExecution, MojoExecution.Source.CLI.equals(mojoExecution.getSource()));

        finalizeMojoConfiguration(mojoExecution);

  /** Most of the tests in this class run against every one of these caches. */
  private Iterable<LoadingCache<Object, Object>> caches() {
    // lots of different ways to configure a LoadingCache
    CacheBuilderFactory factory = cacheFactory();
    return Iterables.transform(
        factory.buildAllPermutations(),
        new Function<CacheBuilder<Object, Object>, LoadingCache<Object, Object>>() {

            while (firstRun || retry) {
                ChecksumObserver md5ChecksumObserver = null;
                ChecksumObserver sha1ChecksumObserver = null;
                try {
                    // TODO configure on repository
                    int i = 0;

                    md5ChecksumObserver = addChecksumObserver(wagon, CHECKSUM_ALGORITHMS[i++]);

  /** Most of the tests in this class run against every one of these caches. */
  private Iterable<LoadingCache<Object, Object>> caches() {
    // lots of different ways to configure a LoadingCache
    CacheBuilderFactory factory = cacheFactory();
    return Iterables.transform(
        factory.buildAllPermutations(),
        new Function<CacheBuilder<Object, Object>, LoadingCache<Object, Object>>() {

        return null;
    }

    @Override
    public void xacceptScalarSelectOption(ScalarSelectOption option) {
        // do nothing
    }

    @Override
    public void configure(StatementConfigCall<StatementConfig> confLambda) {
        // do nothing
    }

    @Override
    public StatementConfig getStatementConfig() {
        return null;
    }

    @Override

        return null;
    }

    @Override
    public void xacceptScalarSelectOption(ScalarSelectOption option) {
        // do nothing
    }

    @Override
    public void configure(StatementConfigCall<StatementConfig> confLambda) {
        // do nothing
    }

    @Override
    public StatementConfig getStatementConfig() {
        return null;
    }

    @Override