docs: public BEValue bdecodeBytes() throws IOException {
      int c = this.getNextIndicator();
      int num = c - '0';
      if (num < 0 || num > 9)
        throw new InvalidBEncodingException("Number expected, not '"
                + (char) c + "'");
      this.indicator = 0;
  
      c = this.read();
      int i = c - '0';
      while (i >= 0 && i <= 9) {
        // This can overflow!
        num = num * 10 + i;
        c = this.read();
        i = c - '0';
      }
  
      if (c != ':') {
        throw new InvalidBEncodingException("Colon expected, not '" +
                (char) c + "'");
      }
  
      return new BEValue(read(num));
    }