tg.enumerate(tgList);

        boolean seen = false;

        for (ThreadGroup aTgList : tgList) {
            if (!aTgList.getName().equals(DefaultArtifactResolver.DaemonThreadCreator.THREADGROUP_NAME)) {
                continue;
            }

            seen = true;

            tg = aTgList;
            Thread[] ts = new Thread[tg.activeCount()];

import javax.inject.Singleton;

import org.apache.maven.artifact.metadata.ArtifactMetadataSource;
import org.apache.maven.artifact.resolver.DefaultArtifactResolver;

@Named("classpath")
@Singleton
@Deprecated
public class TestArtifactResolver extends DefaultArtifactResolver {
    private ArtifactMetadataSource source;

    @Inject
    public TestArtifactResolver(final @Named("classpath") ArtifactMetadataSource source) {

-->

<plexus>
  <components>
    <component>
      <role>org.apache.maven.artifact.resolver.ArtifactResolver</role>
      <role-hint>default</role-hint>
      <implementation>org.apache.maven.artifact.resolver.DefaultArtifactResolver</implementation>
      <isolated-realm>false</isolated-realm>
      <requirements>
        <requirement>
          <role>org.codehaus.plexus.logging.Logger</role>
          <role-hint>default</role-hint>