result.setBusinessCategory(DfTypeUtil.toString(source.get("businessCategory")));
            result.setCarLicense(DfTypeUtil.toString(source.get("carLicense")));
            result.setCity(DfTypeUtil.toString(source.get("city")));
            result.setDepartmentNumber(DfTypeUtil.toString(source.get("departmentNumber")));
            result.setDescription(DfTypeUtil.toString(source.get("description")));

        registerModifiedProperty("carLicense");
        this.carLicense = value;
    }

    public String getCity() {
        checkSpecifiedProperty("city");
        return convertEmptyToNull(city);
    }

    public void setCity(String value) {
        registerModifiedProperty("city");
        this.city = value;
    }

    public String getDepartmentNumber() {

                "businessCategory");
        setupEpg(_epgMap, et -> ((User) et).getCarLicense(), (et, vl) -> ((User) et).setCarLicense(DfTypeUtil.toString(vl)), "carLicense");
        setupEpg(_epgMap, et -> ((User) et).getCity(), (et, vl) -> ((User) et).setCity(DfTypeUtil.toString(vl)), "city");
        setupEpg(_epgMap, et -> ((User) et).getDepartmentNumber(), (et, vl) -> ((User) et).setDepartmentNumber(DfTypeUtil.toString(vl)),
                "departmentNumber");

                setAttributeValue(result, fessConfig.getLdapAttrPostalAddress(), o -> user.setPostalAddress(o.toString()));
                setAttributeValue(result, fessConfig.getLdapAttrCity(), o -> user.setCity(o.toString()));
                setAttributeValue(result, fessConfig.getLdapAttrTeletexTerminalIdentifier(),
                        o -> user.setTeletexTerminalIdentifier(o.toString()));

        assertThat(ZERO.setBit(result)).isAtMost(x);
        assertThat(ZERO.setBit(result + 1)).isGreaterThan(x);
      }
    }
  }

  public void testLog2Ceiling() {
    for (BigInteger x : POSITIVE_BIGINTEGER_CANDIDATES) {
      for (RoundingMode mode : asList(CEILING, UP)) {
        int result = BigIntegerMath.log2(x, mode);
        assertThat(ZERO.setBit(result)).isAtLeast(x);

    for (long value : TEST_LONGS) {
      BigInteger expected =
          (value >= 0)
              ? BigInteger.valueOf(value)
              : BigInteger.valueOf(value).add(BigInteger.ZERO.setBit(64));
      assertWithMessage(UnsignedLongs.toString(value))
          .that(UnsignedLong.fromLongBits(value).bigIntegerValue())
          .isEqualTo(expected);
    }
  }

  public void testValueOfLong() {

    int digits = RANDOM_SOURCE.nextInt(numBits);
    if (digits == 0) {
      return new BigInteger(1, RANDOM_SOURCE);
    } else {
      return new BigInteger(digits, RANDOM_SOURCE).setBit(digits);
    }
  }

  /**
   * Equivalent to calling randomPositiveBigInteger(numBits) and then flipping the sign with 50%
   * probability.
   */
  static BigInteger randomNonZeroBigInteger(int numBits) {

    for (long value : TEST_LONGS) {
      BigInteger expected =
          (value >= 0)
              ? BigInteger.valueOf(value)
              : BigInteger.valueOf(value).add(BigInteger.ZERO.setBit(64));
      assertWithMessage(UnsignedLongs.toString(value))
          .that(UnsignedLong.fromLongBits(value).bigIntegerValue())
          .isEqualTo(expected);
    }
  }

  public void testValueOfLong() {

   *
   * @throws IllegalArgumentException if {@code x <= 0}
   * @since 20.0
   */
  public static BigInteger ceilingPowerOfTwo(BigInteger x) {
    return BigInteger.ZERO.setBit(log2(x, CEILING));
  }

  /**
   * Returns the largest power of two less than or equal to {@code x}. This is equivalent to {@code
   * BigInteger.valueOf(2).pow(log2(x, FLOOR))}.
   *

	n := 0
	wasSpace := 1
	// setBits is used to track which bits are set in the bytes of s.
	setBits := uint8(0)
	for i := 0; i < len(s); i++ {
		r := s[i]
		setBits |= r
		isSpace := int(asciiSpace[r])
		n += wasSpace & ^isSpace
		wasSpace = isSpace
	}

	if setBits >= utf8.RuneSelf {
		// Some runes in the input slice are not ASCII.