* @return The resolved plugin artifact, never {@code null}.
     * @throws PluginResolutionException If the plugin artifact could not be resolved.
     */
    Artifact resolve(Plugin plugin, List<RemoteRepository> repositories, RepositorySystemSession session)
            throws PluginResolutionException;

    /**
     * Resolves the runtime dependencies of the specified plugin.
     *

        return depth;
    }

    public void setDepth(int depth) {
        this.depth = depth;
    }

    public boolean isResolved() {
        return resolved;
    }

    public void setResolved(boolean resolved) {
        this.resolved = resolved;
    }

    public int getPomOrder() {
        return pomOrder;
    }

    public void setPomOrder(int pomOrder) {

     * @param artifactCoordinate The artifact coordinate for which the version needs to be resolved, must not be {@code null}
     * @return The version result, never {@code null}.
     * @throws VersionResolverException If the metaversion could not be resolved.
     */
    @Nonnull
    default VersionResolverResult resolve(@Nonnull Session session, @Nonnull ArtifactCoordinate artifactCoordinate)

        Map.Entry<Artifact, Path> resolved = session.resolveArtifact(coord);
        assertNotNull(resolved);
        assertNotNull(resolved.getKey());
        assertNotNull(resolved.getValue());
        Optional<Path> op = session.getArtifactPath(resolved.getKey());
        assertTrue(op.isPresent());
        assertEquals(resolved.getValue(), op.get());
    }

    @Test

 */
public interface PluginVersionResult {

    /**
     * The resolved plugin version.
     *
     * @return The resolved plugin version, never {@code null}.
     */
    String getVersion();

    /**
     * The repository from which the plugin version was resolved.
     *
     * @return The repository from which the plugin version was resolved, never {@code null}.
     */
    ArtifactRepository getRepository();

import org.apache.maven.artifact.resolver.ArtifactResolutionException;
import org.apache.maven.artifact.resolver.ArtifactResolutionRequest;
import org.apache.maven.artifact.resolver.ArtifactResolutionResult;
import org.apache.maven.artifact.resolver.CyclicDependencyException;
import org.apache.maven.artifact.resolver.ResolutionListener;
import org.apache.maven.artifact.resolver.ResolutionListenerForDepMgmt;

import org.apache.maven.artifact.resolver.ArtifactNotFoundException;
import org.apache.maven.artifact.resolver.ArtifactResolutionException;
import org.apache.maven.artifact.resolver.ArtifactResolutionRequest;
import org.apache.maven.artifact.resolver.ArtifactResolutionResult;
import org.apache.maven.artifact.resolver.MultipleArtifactsNotFoundException;
import org.apache.maven.artifact.resolver.ResolutionErrorHandler;

    /**
     * Create an instance of the exception with all required information.
     *
     * @param originatingArtifact the artifact that was being resolved
     * @param resolvedArtifacts   artifacts that could be resolved
     * @param missingArtifacts    artifacts that could not be resolved
     * @param remoteRepositories  remote repositories where the missing artifacts were not found
     */
    public MultipleArtifactsNotFoundException(

                break;
            }
            trace = trace.getParent();
        }
        return collectStepTrace;
    }

    /**
     * The event "artifact resolved" if fired WHENEVER an artifact is resolved, BUT it happens also when an artifact
     * descriptor (model, the POM) is being built, and parent (and parent of parent...) is being asked for. Hence, this

        // The root artifact may, or may not be resolved so we need to check before we attempt to resolve.
        // This is often an artifact like a POM that is taken from disk and we already have hold of the
        // file reference. But this may be a Maven Plugin that we need to resolve from a remote repository
        // as well as its dependencies.