code: private /*static*/ int getLiteral(int word)
    {
      if (isLiteral(word)) {
        return word;
      }
  
      if (simulateWAH) {
        return isZeroSequence(word) ? ConciseSetUtils.ALL_ZEROS_LITERAL : ConciseSetUtils.ALL_ONES_LITERAL;
      }
  
      // get bits from 30 to 26 and use them to set the corresponding bit
      // NOTE: "1 << (word >>> 25)" and "1 << ((word >>> 25) & 0x0000001F)" are equivalent
      // NOTE: ">>> 1" is required since 00000 represents no bits and 00001 the LSB bit set
      int literal = (1 << (word >>> 25)) >>> 1;
      return isZeroSequence(word)
             ? (ConciseSetUtils.ALL_ZEROS_LITERAL | literal)
             : (ConciseSetUtils.ALL_ONES_LITERAL & ~literal);
    }
docs: Gets the literal word that represents the first 31 bits of the given the
  word (i.e. the first block of a sequence word, or the bits of a literal word).
  <p/>
  If the word is a literal, it returns the unmodified word. In case of a
  sequence, it returns a literal that represents the first 31 bits of the
  given sequence word.
  
  @param word word to check
  
  @return the literal contained within the given word, <i>with the most
  significant bit set to 1</i>.