}

    private void injectProxy(ProxySelector selector, List<ArtifactRepository> repositories) {
        if (repositories != null && selector != null) {
            for (ArtifactRepository repository : repositories) {
                repository.setProxy(getProxy(selector, repository));
            }
        }
    }

    private org.apache.maven.repository.Proxy getProxy(ProxySelector selector, ArtifactRepository repository) {

import org.eclipse.aether.util.artifact.DefaultArtifactTypeRegistry;
import org.eclipse.aether.util.graph.manager.ClassicDependencyManager;
import org.eclipse.aether.util.graph.selector.AndDependencySelector;
import org.eclipse.aether.util.graph.selector.ExclusionDependencySelector;
import org.eclipse.aether.util.graph.transformer.ChainedDependencyGraphTransformer;
import org.eclipse.aether.util.graph.transformer.ConfigurableVersionSelector;

import org.eclipse.aether.repository.LocalRepository;
import org.eclipse.aether.util.graph.manager.ClassicDependencyManager;
import org.eclipse.aether.util.graph.selector.AndDependencySelector;
import org.eclipse.aether.util.graph.selector.ExclusionDependencySelector;
import org.eclipse.aether.util.graph.transformer.ChainedDependencyGraphTransformer;
import org.eclipse.aether.util.graph.transformer.ConflictResolver;

        list.subList(k, list.size()).clear();
      }
      list.trimToSize();
      return Collections.unmodifiableList(list);
    } else {
      TopKSelector<E> selector = TopKSelector.least(k, this);
      selector.offerAll(iterator);
      return selector.topK();
    }
  }

  /**
   * Returns the {@code k} greatest elements of the given iterable according to this ordering, in

                    unknown = true;
                }
                if (selected == null) {
                    selected = type;
                } else if (unknown) {
                    // More than one filtered value, and we don't know how to handle at least one of them.
                    // TODO: add a plugin mechanism for allowing plugin to specify their selection algorithm.
                    return Optional.empty();
                }

        MetadataGraphEdge res;

        res = policy.apply(e1, e2);
        assertEquals("1.1", res.getVersion(), "Wrong depth edge selected");

        res = policy.apply(e1, e3);
        assertEquals("1.2", res.getVersion(), "Wrong version edge selected");
    }
    // ------------------------------------------------------------------------------------------

        return result;
    }

    // ===================================================================================
    //                                                                              Select
    //                                                                              ======
    public int selectCount(CBCall<RoleCB> cbLambda) {
        return facadeSelectCount(createCB(cbLambda));
    }

        return result;
    }

    // ===================================================================================
    //                                                                              Select
    //                                                                              ======
    public int selectCount(CBCall<CrawlingInfoCB> cbLambda) {
        return facadeSelectCount(createCB(cbLambda));
    }

        return result;
    }

    // ===================================================================================
    //                                                                              Select
    //                                                                              ======
    public int selectCount(CBCall<BoostDocumentRuleCB> cbLambda) {
        return facadeSelectCount(createCB(cbLambda));
    }

        return result;
    }

    // ===================================================================================
    //                                                                              Select
    //                                                                              ======
    public int selectCount(CBCall<DataConfigCB> cbLambda) {
        return facadeSelectCount(createCB(cbLambda));
    }