src/main/java/com/groupon/uuid/UUID.java
public long getLeastSignificantBits() {
        long b;
        b  = ((long)content[ 8] & 0xFF) << 56;
        b |= ((long)content[ 9] & 0xFF) << 48;
        b |= ((long)content[10] & 0xFF) << 40;
        b |= ((long)content[11] & 0xFF) << 32;
        b |= ((long)content[12] & 0xFF) << 24;
        b |= ((long)content[13] & 0xFF) << 16;
        b |= ((long)content[14] & 0xFF) << 8;
        b |= ((long)content[15] & 0xFF);
        return b;
    }
public long getLeastSignificantBits() {
        long b;
        b  = ((long)content[ 8] & 0xFF) << 56;
        b |= ((long)content[ 9] & 0xFF) << 48;
        b |= ((long)content[10] & 0xFF) << 40;
        b |= ((long)content[11] & 0xFF) << 32;
        b |= ((long)content[12] & 0xFF) << 24;
        b |= ((long)content[13] & 0xFF) << 16;
        b |= ((long)content[14] & 0xFF) << 8;
        b |= ((long)content[15] & 0xFF);
        return b;
    }
Get the least significant bits (the second half) of the UUID content as a 64-bit long.
@return The second half of the UUID as a long.