code: public void update(int n, byte[] b, int off, int len,
                         ManifestEntryVerifier mev)
          throws IOException
      {
          if (n != -1) {
              if (parsingBlockOrSF) {
                  baos.write(b, off, n);
              } else {
                  mev.update(b, off, n);
              }
          } else {
              processEntry(mev);
          }
      }
docs: update an array of bytes.