code: @Override
  	public byte[] bytes() {
  		return concat(b64UrlEncode(header.bytes()), JwtHelper.PERIOD,
  				b64UrlEncode(content), JwtHelper.PERIOD, b64UrlEncode(crypto));
  	}
docs: Allows retrieval of the full token.
  
  @return the encoded header, claims and crypto segments concatenated with "."
  characters