* @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

     * @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")

    }
  }

  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

    }
    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}.
   *

      addressAsLong = getEmbeddedIPv4ClientAddress(ip6).hashCode();
    } else {
      // Just extract the high 64 bits (assuming the rest is user-modifiable).
      addressAsLong = ByteBuffer.wrap(ip6.getAddress(), 0, 8).getLong();
    }

    // Many strategies for hashing are possible. This might suffice for now.
    int coercedHash = murmur3_32_fixed().hashLong(addressAsLong).asInt();

        assertTrue(Modifier.isPrivate(serialVersionField.getModifiers()));
        serialVersionField.setAccessible(true);
        assertEquals(1L, serialVersionField.getLong(null));
    }

    /**
     * Test that all label constants follow the naming convention
     */
    @Test
    public void test_labelConstantsNamingConvention() throws Exception {

        int capability = bb.getInt();

        // Reserved (4 bytes) - skip
        bb.getInt();

        // LinkSpeed (8 bytes) - in bits per second
        long linkSpeedBps = bb.getLong();

        // Parse sockaddr structure (starts at offset + 24)
        InetAddress addr = parseSockaddr(data, offset + 24);

        if (addr == null) {
            return null;
        }

        if (bytes.length != 16) {
            throw new IllegalArgumentException("GUID must be 16 bytes");
        }
        ByteBuffer bb = ByteBuffer.wrap(bytes);
        long mostSig = bb.getLong();
        long leastSig = bb.getLong();
        this.guid = new UUID(mostSig, leastSig);
    }
    
    public byte[] toBytes() {
        ByteBuffer bb = ByteBuffer.allocate(16);
        bb.putLong(guid.getMostSignificantBits());

         */
        for (i = 0; i < strideLimit; i += stride) {
          long lw = theUnsafe.getLong(left, BYTE_ARRAY_BASE_OFFSET + (long) i);
          long rw = theUnsafe.getLong(right, BYTE_ARRAY_BASE_OFFSET + (long) i);
          if (lw != rw) {
            if (BIG_ENDIAN) {
              return Long.compareUnsigned(lw, rw);
            }