code: @Override
    void throwInternalError(String message, Throwable cause) {
      String finalMessage = "INTERNAL COMPILER ERROR.\nPlease report this problem.\n\n" + message;
  
      RuntimeException e = new RuntimeException(finalMessage, cause);
      if (cause != null) {
        e.setStackTrace(cause.getStackTrace());
      }
      throw e;
    }
docs: Report an internal error.