Dependency dep = result.getEffectiveModel().getDelegate().getDependencyManagement().getDependencies().stream()
                .filter(d -> "test:mydep:jar".equals(d.getManagementKey()))
                .findFirst()
                .get();
        assertEquals("0.2", dep.getVersion());
        assertEquals(0, result.getProblems().size());
    }

    /**
     * This test has

            MavenProject resumingFromProject = projects.stream()
                    .filter(project -> projectSelector.isMatchingProject(project, selector, reactorDirectory))
                    .findFirst()
                    .orElseThrow(() -> new MavenExecutionException(
                            "Could not find project to resume reactor build from: " + selector + " vs "

                        .map(org.apache.maven.api.services.Source::getPath)
                        .orElse(null))
                .filter(Objects::nonNull)
                .findFirst()
                .orElseGet(() -> modelLocator.locatePom(projectDirectory));
        if (!pom.equals(projectDirectory) && !pom.getParent().equals(projectDirectory)) {

            List<MavenProject> projects, File reactorDirectory, String selector) {
        return projects.stream()
                .filter(project -> isMatchingProject(project, selector, reactorDirectory))
                .findFirst();
    }

    File getBaseDirectoryFromRequest(MavenExecutionRequest request) {
        return request.getBaseDirectory() != null ? new File(request.getBaseDirectory()) : null;
    }

      this.supplier = supplier;
    }
  }

  @Param private CollectionType source;

  enum Operation {
    FIND_FIRST {
      @Override
      Object operate(Stream<?> stream) {
        return stream.findFirst();
      }
    },
    STREAMS_ONLY_ELEMENT {
      @Override
      Object operate(Stream<?> stream) {
        try {
          return stream.collect(onlyElement());

    }

    @Override
    public PluginExecution getModel() {
        return delegate.getPlugin().getExecutions().stream()
                .filter(pe -> Objects.equals(pe.getId(), getExecutionId()))
                .findFirst()
                .map(org.apache.maven.model.PluginExecution::getDelegate)
                .orElse(null);
    }

    @Override
    public MojoDescriptor getDescriptor() {

 * differences include:
 *
 * <ul>
 *   <li>A stream is <i>single-use</i>; it becomes invalid as soon as any "terminal operation" such
 *       as {@code findFirst()} or {@code iterator()} is invoked. (Even though {@code Stream}
 *       contains all the right method <i>signatures</i> to implement {@link Iterable}, it does not

   * streams.
   *
   * <p>If the stream has nondeterministic order, this has equivalent semantics to {@link
   * Stream#findAny} (which you might as well use).
   *
   * @see Stream#findFirst()
   * @throws NullPointerException if the last element of the stream is null
   */
  /*
   * By declaring <T> instead of <T extends @Nullable Object>, we declare this method as requiring a

        return getProjectArtifacts(project)
                .filter(artifact ->
                        Objects.equals(requestedRepositoryConflictId, ArtifactIdUtils.toVersionlessId(artifact)))
                .findFirst()
                .orElse(null);
    }

    /**
     * Determines whether the specified artifact refers to test classes.
     *
     * @param artifact The artifact to check, must not be {@code null}.

   * streams.
   *
   * <p>If the stream has nondeterministic order, this has equivalent semantics to {@link
   * Stream#findAny} (which you might as well use).
   *
   * @see Stream#findFirst()
   * @throws NullPointerException if the last element of the stream is null
   */
  /*
   * By declaring <T> instead of <T extends @Nullable Object>, we declare this method as requiring a