MavenProject project = new MavenProject(model);

        assertEquals("test-group", project.getGroupId(), "groupId proto-inheritance failed.");
        assertEquals("real-artifact", project.getArtifactId(), "artifactId is masked.");
        assertEquals("1000", project.getVersion(), "version proto-inheritance failed.");

        // draw the NPE.
        project.getId();
    }

    @Test
    void testEmptyConstructor() {

    }

    /**
     * 配列に変換します。
     *
     * @param proto
     *            要素の格納先の配列。配列のサイズが十分でない場合は、同じ実行時の型で新しい配列が格納用として割り当てられる
     * @return 配列
     */
    public V[] toArray(final V[] proto) {
        @SuppressWarnings("unchecked")
        final V[] array = proto.length >= size ? proto : (V[]) Array.newInstance(proto.getClass().getComponentType(), size);
        for (int i = 0; i < array.length; i++) {

  public static final String X_FORWARDED_FOR = "X-Forwarded-For";
  /** The HTTP {@code X-Forwarded-Proto} header field name. */
  public static final String X_FORWARDED_PROTO = "X-Forwarded-Proto";
  /**
   * The HTTP <a href="http://goo.gl/lQirAH">{@code X-Forwarded-Host}</a> header field name.
   *
   * @since 20.0
   */