docs: private static List<Integer> exploreRecord(
              ByteBuffer input) throws SSLException {
  
          // client version
          byte helloMajorVersion = input.get();
          byte helloMinorVersion = input.get();
          if (helloMajorVersion != 3 && helloMinorVersion != 3) {
              //we only care about TLS 1.2
              return null;
          }
  
  
          // ignore random
          for (int i = 0; i < 32; ++i) {// 32: the length of Random
              byte d = input.get();
          }
  
          // session id
          processByteVector8(input);
  
          // cipher_suites
  
          int int16 = getInt16(input);
          List<Integer> ciphers = new ArrayList<>();
          for (int i = 0; i < int16; i += 2) {
              ciphers.add(getInt16(input));
  
          }
  
          // compression methods
          processByteVector8(input);
          if (input.remaining() > 0) {
              return exploreExtensions(input, ciphers);
          }
          return null;
      }