code: public static void materialize(final IteratingRLW32 i,
                                     final BitmapStorage32 c) {
          while (true) {
              if (i.getRunningLength() > 0) {
                  c.addStreamOfEmptyWords(i.getRunningBit(),
                          i.getRunningLength());
              }
              int il = i.getNumberOfLiteralWords();
              for (int k = 0; k < il ; ++k)
                  c.addWord(i.getLiteralWordAt(k));
              if (!i.next())
                  break;
          }
      }
docs: Turn an iterator into a bitmap
  
  @param i iterator we wish to materialize
  @param c where we write