throws ArtifactResolutionException, ArtifactNotFoundException {
        resolve(artifact, remoteRepositories, getSession(localRepository));
    }

    @Override
    public void resolveAlways(
            Artifact artifact, List<ArtifactRepository> remoteRepositories, ArtifactRepository localRepository)
            throws ArtifactResolutionException, ArtifactNotFoundException {

        return null;
    }

    private ArtifactResolutionResult collect(Set<Artifact> artifacts) throws ArtifactResolutionException {
        return collect(artifacts, null);
    }

    private ArtifactResolutionResult collect(Set<Artifact> artifacts, ArtifactFilter filter)
            throws ArtifactResolutionException {
        return artifactCollector.collect(

import java.util.Map;

import org.apache.maven.artifact.repository.ArtifactRepository;
import org.apache.maven.artifact.resolver.ArtifactNotFoundException;
import org.apache.maven.artifact.resolver.ArtifactResolutionException;
import org.apache.maven.artifact.versioning.InvalidVersionSpecificationException;
import org.apache.maven.execution.MavenSession;
import org.apache.maven.model.Plugin;

                        if (resolved == null) {
                            // TODO add better exception that can detail the two conflicting artifacts
                            ArtifactResolutionException are = new ArtifactResolutionException(
                                    "Cannot resolve artifact version conflict between "
                                            + previous.getArtifact().getVersion() + " and "

    private List<Exception> exceptions;

    private List<Exception> versionRangeViolations;

    private List<ArtifactResolutionException> metadataResolutionExceptions;

    private List<CyclicDependencyException> circularDependencyExceptions;

    private List<ArtifactResolutionException> errorArtifactExceptions;

    // file system errors

    private List<ArtifactRepository> repositories;

import org.apache.maven.artifact.repository.ArtifactRepository;
import org.apache.maven.artifact.resolver.ArtifactNotFoundException;
import org.apache.maven.artifact.resolver.ArtifactResolutionException;
import org.apache.maven.execution.MavenExecutionRequest;
import org.apache.maven.execution.MavenSession;
import org.apache.maven.model.Repository;
import org.apache.maven.model.building.ModelBuildingException;

            return true;
        }
        return e.getCause() instanceof org.eclipse.aether.resolution.ArtifactResolutionException
                && e.getCause().getCause() instanceof ArtifactNotFoundException;
    }

    private boolean isNonTransferablePom(Exception e) {
        if (e.getCause() instanceof ArtifactResolutionException) {
            return true;
        }