if (safeMax < safeMin) {
      // If the safe range is empty, set the range limits to opposite extremes
      // to ensure the first test of either value will (almost certainly) fail.
      safeMax = Character.MIN_VALUE;
      safeMin = Character.MAX_VALUE;
    }
    this.safeMin = safeMin;
    this.safeMax = safeMax;
  }

  /*
   * This is overridden to improve performance. Rough benchmarking shows that this almost doubles

  public static final class ImmutableLongArrayHeadSubListAsListGenerator
      extends TestLongListGenerator {
    @Override
    protected List<Long> create(Long[] elements) {
      Long[] suffix = {Long.MIN_VALUE, Long.MAX_VALUE};
      Long[] all = concat(elements, suffix);
      return makeArray(all).subArray(0, elements.length).asList();
    }
  }

  @J2ktIncompatible
  @GwtIncompatible // used only from suite

    // (Unicode code points above \uFFFF are represented via surrogate pairs
    // which means they are treated as pairs of safe characters).
    builder.setSafeRange(Character.MIN_VALUE, '\uFFFD');
    // Unsafe characters are replaced with the Unicode replacement character.
    builder.setUnsafeReplacement("\uFFFD");

    /*

    }

    public Ansi scrollUp(final int rows) {
        if (rows == Integer.MIN_VALUE) {
            return scrollDown(Integer.MAX_VALUE);
        }
        return rows > 0 ? appendEscapeSequence('S', rows) : rows < 0 ? scrollDown(-rows) : this;
    }

    public Ansi scrollDown(final int rows) {
        if (rows == Integer.MIN_VALUE) {
            return scrollUp(Integer.MAX_VALUE);
        }

                Arguments.of((LongGetter) FileEntry::lastAccess, 0L, "zero lastAccess"),
                Arguments.of((LongGetter) FileEntry::lastAccess, Long.MIN_VALUE, "min lastAccess"),

                Arguments.of((LongGetter) FileEntry::length, -100L, "negative length"),
                Arguments.of((LongGetter) FileEntry::length, 0L, "zero length"),

        assertEquals(nameBytes.length, SMBUtil.readInt4(buffer, 8));
    }

    @ParameterizedTest
    @DisplayName("Test with various timeout values")
    @ValueSource(longs = { 0L, 1L, -1L, Long.MAX_VALUE, Long.MIN_VALUE, 1000L, -1000L })
    void testWithVariousTimeoutValues(long timeout) {
        // Setup
        String pipeName = "TestPipe";
        FsctlPipeWaitRequest request = new FsctlPipeWaitRequest(pipeName, timeout);

        // Valid inputs: each known code must map to its documented message
        assertEquals(expectedMessage, lookupMessage(code).orElse(null));
    }

    @ParameterizedTest
    @ValueSource(ints = { -1, Integer.MIN_VALUE, Integer.MAX_VALUE })
    @DisplayName("Unknown codes: lookup returns empty Optional")
    void lookup_returns_empty_for_unknown_codes(int unknownCode) {
        // Invalid inputs: codes not present should yield no message

      return null;
    }
    long accum = -digit;

    long cap = Long.MIN_VALUE / radix;

    while (index < string.length()) {
      digit = AsciiDigits.digit(string.charAt(index++));
      if (digit < 0 || digit >= radix || accum < cap) {
        return null;
      }
      accum *= radix;
      if (accum < Long.MIN_VALUE + digit) {
        return null;
      }
      accum -= digit;
    }

    }

    @Nested
    @DisplayName("Test Implementation Tests")
    class TestImplementationTests {

        @ParameterizedTest
        @ValueSource(bytes = { -1, 0, 1, 3, 7, Byte.MAX_VALUE, Byte.MIN_VALUE })
        @DisplayName("Should handle various information class values")
        void testVariousInformationClassValues(byte classValue) {

        int result = SMBUtil.readInt4(buffer, 0);
        assertEquals((int) (input & 0xFFFFFFFFL), result);
    }

    @ParameterizedTest
    @ValueSource(longs = { 0L, 1L, -1L, Long.MAX_VALUE, Long.MIN_VALUE, 0x123456789ABCDEF0L })
    void testWriteReadInt8RoundTrip(long input) {
        byte[] buffer = new byte[8];
        SMBUtil.writeInt8(input, buffer, 0);
        long result = SMBUtil.readInt8(buffer, 0);