msgs.add("* as @threadSafe to support parallel building.                  *");
        msgs.add("* While this /may/ work fine, please look for plugin updates    *");
        msgs.add("* and/or request plugins be made thread-safe.                   *");
        msgs.add("* If reporting an issue, report it against the plugin in        *");
        msgs.add("* question, not against maven-core                              *");

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.function.Predicate;

import static java.util.stream.Collectors.toSet;

/**
 * Container for storing the request from the user to activate or de-activate certain profiles and optionally fail the
 * build if those profiles do not exist.
 */
public class ProfileActivation {

import org.eclipse.aether.repository.ArtifactRepository;

/**
 */
public class PluginVersionResolverStub implements PluginVersionResolver {

    public PluginVersionResult resolve(PluginVersionRequest request) throws PluginVersionResolutionException {
        return new PluginVersionResult() {
            public String getVersion() {
                return "0.42";
            }

package org.apache.maven.plugin.version.internal;

import org.apache.maven.plugin.version.PluginVersionResult;
import org.eclipse.aether.repository.ArtifactRepository;

/**
 * Describes the result of a plugin version resolution request.
 *
 * @since 3.0
 */
class DefaultPluginVersionResult implements PluginVersionResult {

    private String version;

    private ArtifactRepository repository;

    DefaultPluginVersionResult() {

import java.util.List;

import org.apache.maven.artifact.Artifact;
import org.apache.maven.artifact.repository.ArtifactRepository;

/**
 * A simple recording of the Artifacts that could not be resolved for a given resolution request, along with
 * the remote repositories where attempts were made to resolve the artifacts.
 *
 */
@Deprecated
public class UnresolvedArtifacts {
    private Artifact originatingArtifact;

import org.apache.maven.model.Plugin;
import org.apache.maven.plugin.prefix.PluginPrefixResult;
import org.eclipse.aether.repository.ArtifactRepository;

/**
 * Describes the result of a plugin prefix resolution request.
 *
 * @since 3.0
 */
class DefaultPluginPrefixResult implements PluginPrefixResult {

    private String groupId;

    private String artifactId;

    private ArtifactRepository repository;

        this.managedVersionMap = managedVersionMap;

        return this;
    }

    public String toString() {
        StringBuilder sb = new StringBuilder()
                .append("REQUEST: ")
                .append("\n")
                .append("artifact: ")
                .append(mad)
                .append("\n")
                .append(artifactDependencies)
                .append("\n")

    a debug message.

  * If the wagon is bound to "file://" then:

    Retrieve the file or base-url file to be "downloaded".

    * If the file (or more usefully, the base-url file) exists, proceed.

    * If the file (or base-url file) doesn't exist, assume that this location
      is part of a file-share. Ignore the request and print a debug message
      as above.

        MavenExecutionRequest request = new DefaultMavenExecutionRequest()
                .setSystemProperties(properties)
                .setGoals(Collections.<String>emptyList())
                .setBaseDirectory(new File(""))
                .setLocalRepository(repo);

        return new MavenSession(
                container, request, new DefaultMavenExecutionResult(), Collections.<MavenProject>emptyList());

    private final ProfileModelMerger merger = new ProfileModelMerger();

    @Override
    public Model injectProfiles(
            Model model, List<Profile> profiles, ModelBuilderRequest request, ModelProblemCollector problems) {
        Model result = CACHE.computeIfAbsent(model, k -> new ConcurrentHashMap<>())
                .computeIfAbsent(profiles, l -> doInjectProfiles(model, profiles));