* @return The Long value, or null if the key doesn't exist or value is null
     * @throws NumberFormatException if the value cannot be parsed as a Long
     */
    public static Long getLong(final Map<String, Object> map, final String key) {
        return getLong(map, key, null);
    }

    /**
     * Gets a Long value from the map with a default value.
     *
     * @param map The source map
     * @param key The key to look up

        // The last 8 bytes are read as big-endian (network byte order for the high/low parts)
        ByteBuffer bb2 = ByteBuffer.wrap(bytes, 8, 8).order(java.nio.ByteOrder.BIG_ENDIAN);
        long data4 = bb2.getLong();

        // Construct UUID from components - Java UUID expects big-endian representation
        long mostSig = ((long) data1 << 32) | ((long) (data2 & 0xFFFF) << 16) | (data3 & 0xFFFF);
        long leastSig = data4;

     * @param def the default value to return if key is not found or cannot be parsed
     * @return the long value of the property or the default value
     */
    public static long getLong(final Properties props, final String key, long def) {
        final String s = props.getProperty(key);
        if (s != null) {
            try {
                def = Long.parseLong(s);

     * @param def the default value to return if the property is not found or cannot be parsed
     * @return the property value as a long, or the default value
     */

    public static long getLong(final String key, long def) {
        final String s = prp.getProperty(key);
        if (s != null) {
            try {
                def = Long.parseLong(s);
            } catch (final NumberFormatException nfe) {

        ByteBuffer buffer2 = ByteBuffer.wrap(nonce2, 0, 8).order(java.nio.ByteOrder.LITTLE_ENDIAN);
        long counter1 = buffer1.getLong();
        long counter2 = buffer2.getLong();

        assertEquals(counter1 + 1, counter2, "CCM counter should increment between nonces");
    }

    @Test
    @DisplayName("Should generate multiple unique nonces without collision")

        map.put("int", 456);
        map.put("string", "789");

        assertEquals(Long.valueOf(123L), MapValueExtractor.getLong(map, "long"));
        assertEquals(Long.valueOf(456L), MapValueExtractor.getLong(map, "int"));
        assertEquals(Long.valueOf(789L), MapValueExtractor.getLong(map, "string"));
    }

    @Test
    public void testGetLong_withNullAndMissingKey() {
        Map<String, Object> map = new HashMap<>();

    }

    @Test
    @DisplayName("Should get long property with default value")
    void testGetLongWithDefault() {
        assertEquals(1234567890123L, Config.getLong(testProperties, "test.long", 0L));
        assertEquals(987654321L, Config.getLong(testProperties, "nonexistent.long", 987654321L));
    }

    @Test
    @DisplayName("Should get InetAddress property with default value")

    }
  }

  private static LittleEndianBytes makeGetter() {
    try {
      /*
       * UnsafeByteArray uses Unsafe.getLong() in an unsupported way, which is known to cause
       * crashes on Android when running in 32-bit mode. For maximum safety, we shouldn't use
       * Unsafe.getLong() at all, but the performance benefit on x86_64 is too great to ignore, so

      super(CHUNK_SIZE);
      this.h1 = seed;
      this.h2 = seed;
      this.length = 0;
    }

    @Override
    protected void process(ByteBuffer bb) {
      long k1 = bb.getLong();
      long k2 = bb.getLong();
      bmix64(k1, k2);
      length += CHUNK_SIZE;
    }

    private void bmix64(long k1, long k2) {
      h1 ^= mixK1(k1);

      h1 = Long.rotateLeft(h1, 27);
      h1 += h2;

    }
    return result;
  }

  /**
   * Returns the {@code long} value whose big-endian representation is stored in the first 8 bytes
   * of {@code bytes}; equivalent to {@code ByteBuffer.wrap(bytes).getLong()}. For example, the
   * input byte array {@code {0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19}} would yield the
   * {@code long} value {@code 0x1213141516171819L}.
   *