request.setParameter("userCode", buf.toString());
        assertNull(userInfoHelper.getUserCodeFromRequest(request));

        buf.append("12345ABCDE");
        request.setParameter("userCode", buf.toString());
        assertEquals("12345abcde12345ABCDE", userInfoHelper.getUserCodeFromRequest(request));
        request.setParameter("userCode", buf.toString() + "_");

        System.getProperties()
                .keySet()
                .stream()
                .filter(k -> k != null && k.toString().startsWith(Constants.FESS_CONFIG_PREFIX))
                .forEach(k -> addSystemProperty(cmdList, k.toString(), null, null));
    }

    /**
     * Adds all Fess system properties to the command list.

  }

  public void testToString() {
    assertEquals("foo", entry("foo", 1).toString());
    assertEquals("bar x 2", entry("bar", 2).toString());
  }

  public void testToStringNull() {
    assertEquals("null", entry(NE, 1).toString());
    assertEquals("null x 2", entry(NE, 2).toString());
  }

  public void testEquals() {
    assertEquals(control("foo", 1), entry("foo", 1));

    assertTrue(range.hasUpperBound());
    assertEquals(8, (int) range.upperEndpoint());
    assertEquals(OPEN, range.upperBoundType());
    assertFalse(range.isEmpty());
    assertEquals("(4..8)", range.toString());
    reserializeAndAssert(range);
  }

  public void testOpen_invalid() {
    assertThrows(IllegalArgumentException.class, () -> Range.open(4, 3));

  }

  /**
   * Returns a human-readable string representation of {@code type}.
   *
   * <p>The format is subject to change.
   */
  static String toString(Type type) {
    return (type instanceof Class) ? ((Class<?>) type).getName() : type.toString();
  }

  static @Nullable Type getComponentType(Type type) {
    checkNotNull(type);
    AtomicReference<@Nullable Type> result = new AtomicReference<>();

        return rootCause;
    }

    @Override
    public String toString() {
        if (rootCause != null) {
            final StringWriter sw = new StringWriter();
            final PrintWriter pw = new PrintWriter(sw);
            rootCause.printStackTrace(pw);
            return super.toString() + "\n" + sw;
        }
        return super.toString();
    }

    @Override
    public String toString() {
        if (isEmpty()) {
            return "empty";
        }
        StringBuilder sb = new StringBuilder(512);
        for (MetadataGraphVertex v : vertices) {
            sb.append("Vertex:  ").append(v.getMd().toString()).append('\n');
            List<MetadataGraphEdge> ins = getIncidentEdges(v);

        setupEpg(_epgMap, et -> ((ScheduledJob) et).getScriptData(), (et, vl) -> ((ScheduledJob) et).setScriptData(DfTypeUtil.toString(vl)),
                "scriptData");
        setupEpg(_epgMap, et -> ((ScheduledJob) et).getScriptType(), (et, vl) -> ((ScheduledJob) et).setScriptType(DfTypeUtil.toString(vl)),
                "scriptType");

                "createdBy");
        setupEpg(_epgMap, et -> ((PathMapping) et).getCreatedTime(), (et, vl) -> ((PathMapping) et).setCreatedTime(DfTypeUtil.toLong(vl)),
                "createdTime");
        setupEpg(_epgMap, et -> ((PathMapping) et).getProcessType(), (et, vl) -> ((PathMapping) et).setProcessType(DfTypeUtil.toString(vl)),
                "processType");

   * instance being decorated.
   */
  protected abstract Object delegate();

  /** Returns the string representation generated by the delegate's {@code toString} method. */
  @Override
  public String toString() {
    return delegate().toString();
  }

  /* No equals or hashCode. See class comments for details. */