// together. Services with an identical Group are returned in
	// the same answer.
	Group string `json:"group,omitempty"`

	// Key carries the original key used during Put().
	Key string `json:"-"`

    ResolutionGroup get(
            Artifact artifact,
            boolean resolveManagedVersions,
            ArtifactRepository localRepository,
            List<ArtifactRepository> remoteRepositories);

    void put(
            Artifact artifact,
            boolean resolveManagedVersions,
            ArtifactRepository localRepository,
            List<ArtifactRepository> remoteRepositories,
            ResolutionGroup result);

    }

    private void writeLastUpdated(File touchfile, String key, String error) {
        HashMap<String, String> update = new HashMap<>();
        update.put(key, Long.toString(System.currentTimeMillis()));
        update.put(key + ERROR_KEY_SUFFIX, error); // error==null => remove mapping
        trackingFileManager.update(touchfile, update);
    }

    Date readLastUpdated(File touchfile, String key) {

      TesterRequirements requirements = classTesterRequirementsCache.get(testerClass);
      if (requirements == null) {
        requirements = buildTesterRequirements(testerClass);
        classTesterRequirementsCache.put(testerClass, requirements);
      }
      return requirements;
    }
  }

  /**
   * Get the full set of requirements for a tester class.
   *
   * @param testerMethod a test method of a tester class

  fun run() {
    fileSystem.write(path) {
      writeUtf8("{}")
    }

    val request =
      Request
        .Builder()
        .url("https://httpbin.org/anything")
        .put(path.asRequestBody(fileSystem, MEDIA_TYPE_JSON))
        .build()

    client.newCall(request).execute().use { response ->
      if (!response.isSuccessful) throw IOException("Unexpected code $response")

      for (int index2 = 0; index2 <= 100; index2++) {
        ImmutableMap.Builder<Integer, Double> expectedBuilder = ImmutableMap.builder();
        expectedBuilder.put(index1, expectedLargeDatasetPercentile(index1));
        if (index2 != index1) {
          expectedBuilder.put(index2, expectedLargeDatasetPercentile(index2));
        }
        assertThat(percentiles().indexes(index1, index2).compute(PSEUDORANDOM_DATASET))

      for (int index2 = 0; index2 <= 100; index2++) {
        ImmutableMap.Builder<Integer, Double> expectedBuilder = ImmutableMap.builder();
        expectedBuilder.put(index1, expectedLargeDatasetPercentile(index1));
        if (index2 != index1) {
          expectedBuilder.put(index2, expectedLargeDatasetPercentile(index2));
        }
        assertThat(percentiles().indexes(index1, index2).compute(PSEUDORANDOM_DATASET))

@Deprecated
class MavenBuildTimestampTest {
    @Test
    void testMavenBuildTimestampUsesUTC() {
        Properties interpolationProperties = new Properties();
        interpolationProperties.put("maven.build.timestamp.format", "yyyyMMdd'T'HHmm'Z'");
        MavenBuildTimestamp timestamp = new MavenBuildTimestamp(new Date(), interpolationProperties);
        String formattedTimestamp = timestamp.formattedTimestamp();

        if (value != null) {
            return value;
        }
        return parent.get(toCamelCase(key));
    }

    @Override
    public V put(final K key, final V value) {
        return parent.put(key, value);
    }

    @Override
    public V remove(final Object key) {
        final V value = parent.remove(key);
        if (value != null) {
            return value;

  @SuppressWarnings("RedundantOverride") // b/192446478: RedundantOverride ignores some annotations.
  // TODO(b/192446998): Remove this override after tools understand nullness better.
  public @Nullable V put(K key, @ParametricNullness V value) {
    return super.put(key, value);
  }

  @CanIgnoreReturnValue
  @Override
  @SuppressWarnings("RedundantOverride") // b/192446478: RedundantOverride ignores some annotations.