private static Collection<String> collectActivatedProfiles(MavenProject mavenProject) {
    // for some reason project's active profiles do not contain parent's profiles - only local and
    // settings'.
    // parent's profiles do not contain settings' profiles.

    List<Profile> profiles = new ArrayList<Profile>();
    while (mavenProject != null) {
      profiles.addAll(mavenProject.getActiveProfiles());
      mavenProject = mavenProject.getParent();
    }
    return collectProfilesIds(profiles);
  }
  @NotNull
  private MavenServerExecutionResult createExecutionResult(
      File file, MavenExecutionResult result, DependencyNode rootNode) throws RemoteException {
    Collection<MavenProjectProblem> problems = MavenProjectProblem.createProblemsList();
    THashSet<MavenId> unresolvedArtifacts = new THashSet<MavenId>();

    validate(file, result.getExceptions(), problems, unresolvedArtifacts);

    MavenProject mavenProject = result.getMavenProject();
    if (mavenProject == null)
      return new MavenServerExecutionResult(null, problems, unresolvedArtifacts);

    MavenModel model =
        MavenModelConverter.convertModel(
            mavenProject.getModel(),
            mavenProject.getCompileSourceRoots(),
            mavenProject.getTestCompileSourceRoots(),
            mavenProject.getArtifacts(),
            (rootNode == null ? Collections.emptyList() : rootNode.getChildren()),
            mavenProject.getExtensionArtifacts(),
            getLocalRepositoryFile());

    RemoteNativeMavenProjectHolder holder = new RemoteNativeMavenProjectHolder(mavenProject);
    try {
      UnicastRemoteObject.exportObject(holder, 0);
    } catch (RemoteException e) {
      throw new RuntimeException(e);
    }

    Collection<String> activatedProfiles = collectActivatedProfiles(mavenProject);

    MavenServerExecutionResult.ProjectData data =
        new MavenServerExecutionResult.ProjectData(
            model,
            MavenModelConverter.convertToMap(mavenProject.getModel()),
            holder,
            activatedProfiles);
    return new MavenServerExecutionResult(data, problems, unresolvedArtifacts);
  }
  @Override
  public Collection<MavenArtifact> resolvePlugin(
      @NotNull MavenPlugin plugin,
      @NotNull List<MavenRemoteRepository> repositories,
      int nativeMavenProjectId,
      boolean transitive)
      throws RemoteException, MavenServerProcessCanceledException {
    try {
      Plugin mavenPlugin = new Plugin();
      mavenPlugin.setGroupId(plugin.getGroupId());
      mavenPlugin.setArtifactId(plugin.getArtifactId());
      mavenPlugin.setVersion(plugin.getVersion());
      MavenProject project = RemoteNativeMavenProjectHolder.findProjectById(nativeMavenProjectId);

      MavenExecutionRequest request =
          createRequest(
              null,
              Collections.<String>emptyList(),
              Collections.<String>emptyList(),
              Collections.<String>emptyList());

      DefaultMaven maven = (DefaultMaven) getComponent(Maven.class);
      RepositorySystemSession repositorySystemSession = maven.newRepositorySession(request);

      if (plugin.getVersion() == null) {
        PluginVersionRequest versionRequest =
            new DefaultPluginVersionRequest(
                mavenPlugin, repositorySystemSession, project.getRemotePluginRepositories());
        mavenPlugin.setVersion(
            getComponent(PluginVersionResolver.class).resolve(versionRequest).getVersion());
      }

      PluginDescriptor result =
          getComponent(MavenPluginManager.class)
              .getPluginDescriptor(
                  mavenPlugin, project.getRemotePluginRepositories(), repositorySystemSession);

      Map<MavenArtifactInfo, MavenArtifact> resolvedArtifacts =
          new THashMap<MavenArtifactInfo, MavenArtifact>();

      Artifact pluginArtifact = result.getPluginArtifact();

      MavenArtifactInfo artifactInfo =
          new MavenArtifactInfo(
              pluginArtifact.getGroupId(),
              pluginArtifact.getArtifactId(),
              pluginArtifact.getVersion(),
              pluginArtifact.getType(),
              null);

      resolveIfNecessary(artifactInfo, repositories, resolvedArtifacts);

      if (transitive) {
        // todo try to use parallel downloading
        for (Artifact each : result.getIntroducedDependencyArtifacts()) {
          resolveIfNecessary(
              new MavenArtifactInfo(
                  each.getGroupId(), each.getArtifactId(), each.getVersion(), each.getType(), null),
              repositories,
              resolvedArtifacts);
        }
        for (ComponentDependency each : result.getDependencies()) {
          resolveIfNecessary(
              new MavenArtifactInfo(
                  each.getGroupId(), each.getArtifactId(), each.getVersion(), each.getType(), null),
              repositories,
              resolvedArtifacts);
        }
      }

      return new THashSet<MavenArtifact>(resolvedArtifacts.values());
    } catch (Exception e) {
      Maven3ServerGlobals.getLogger().info(e);
      return Collections.emptyList();
    }
  }