docs: public static String byteArrayToBitString(byte[] bytes, int bitCount) {
  
          char[] s = new char[bitCount];
  
          for (int j = 0; j < bitCount; j++) {
              byte b = bytes[j / 8];
  
              s[j] = BitMap.isSet(b, j % 8) ? '1'
                                            : '0';
          }
  
          return new String(s);
      }