* collector without breaking j2cl?
   */
  private static final Collector<Object, ?, Optional<Object>> TO_OPTIONAL =
      Collector.of(
          ToOptionalState::new,
          ToOptionalState::add,
          ToOptionalState::combine,
          ToOptionalState::getOptional,
          Collector.Characteristics.UNORDERED);

  /**
   * A collector that converts a stream of zero or one elements to an {@code Optional}.
   *

Paul Merlin <******@****.***> 1744404366 +0200

        List<String> overriddenMethods = Stream.of(FileToRawModelMerger.class.getDeclaredMethods())
                .map(Method::getName)
                .filter(m -> m.startsWith("merge"))
                .collect(Collectors.toList());

        assertTrue(
                overriddenMethods.containsAll(methodNames),
                "Expected overriddenMethods " + overriddenMethods + " to contain all methodNames " + methodNames);
    }

	return mg.bucketLoader != nil
}

// Describe - implements prometheus.Collector interface.
func (mg *MetricsGroup) Describe(ch chan<- *prometheus.Desc) {
	for _, desc := range mg.Descriptors {
		ch <- desc.toPromDesc(mg.CollectorPath.metricPrefix(), mg.ExtraLabels)
	}
}

// Collect - implements prometheus.Collector interface.
func (mg *MetricsGroup) Collect(ch chan<- prometheus.Metric) {

                if (first instanceof Entity) {
                    data.register(key, coll.stream().map(BeanUtil::copyBeanToNewMap).collect(Collectors.toList()));
                    return;
                }
            }
            data.register(key, value);
        }
    }

        this.artifactTransformations = Stream.of("release", "latest", "snapshot")
                .map(artifactTransformations::get)
                .filter(Objects::nonNull)
                .collect(Collectors.toList());
    }

    @Override
    public void transformForResolve(Artifact artifact, RepositoryRequest request)
            throws ArtifactResolutionException, ArtifactNotFoundException {

        final File[] jarFiles = ResourceUtil.getPluginJarFiles(PluginHelper.ArtifactType.DATA_STORE.getId());
        if (jarFiles == null) {
            return nameSet.stream().sorted().collect(Collectors.toList());
        }
        for (final File jarFile : jarFiles) {
            try (FileSystem fs = FileSystems.newFileSystem(jarFile.toPath(), ClassLoader.getSystemClassLoader())) {

/**
 * Artifact collector - takes a set of original artifacts and resolves the best versions to use
 * along with their metadata. No artifacts are downloaded.
 */
@Deprecated
public interface ArtifactCollector extends org.apache.maven.repository.legacy.resolver.LegacyArtifactCollector {

    @Deprecated
    ArtifactResolutionResult collect(
            Set<Artifact> artifacts,

import org.apache.maven.project.MavenProject;
import org.apache.maven.project.ProjectBuildingException;

/**
 * Strategy to collect projects based on the <code>-f</code> CLI parameter or the pom.xml in the working directory.
 */
@Named("RequestPomCollectionStrategy")
@Singleton
public class RequestPomCollectionStrategy implements ProjectCollectionStrategy {
    private final ProjectsSelector projectsSelector;

    @Inject

        if (!hasMessage) {
            String actualMessages = actual.getProblems().stream()
                    .map(ModelProblem::getMessage)
                    .map(m -> "\"" + m + "\"")
                    .collect(joining(", "));
            String message = String.format(
                    "Expected ProjectBuildingResult to have problem message containing <%s> but had messages <%s>",
                    problemMessage, actualMessages);