code: public static EWAHCompressedBitmap32 materialize(final IteratingRLW32 i) {
          EWAHCompressedBitmap32 ewah = new EWAHCompressedBitmap32();
          materialize(i, ewah);
          return ewah;
      }
docs: Turn an iterator into a bitmap
  
  
  This can be used to effectively clone a bitmap in the following
  manner:
  
  <code>
  EWAHCompressedBitmap32 n = IteratorUtil32.materialize(bitmap.getIteratingRLW()));
  n.setSizeInBitsWithinLastWord(bitmap.sizeInBits());
  </code>
  
  @param i iterator we wish to materialize
  @return materialized version of the iterator