code: @Deprecated public static void AttachExceptionHandler(List tags, Map userCustomData) {
      UncaughtExceptionHandler oldHandler = Thread.getDefaultUncaughtExceptionHandler();
      if (!(oldHandler instanceof RaygunUncaughtExceptionHandler)) {
        RaygunClient.handler = new RaygunUncaughtExceptionHandler(oldHandler, tags, userCustomData);
        Thread.setDefaultUncaughtExceptionHandler(RaygunClient.handler);
      }
    }
docs: Attaches a pre-built Raygun exception handler to the thread's DefaultUncaughtExceptionHandler.
  This automatically sends any exceptions that reaches it to the Raygun API.
  @param tags A list of tags that relate to the calling application's currently build or state.
  These will be appended to all exception messages sent to Raygun.
  @param userCustomData A set of key-value pairs that will be attached to each exception message
  sent to Raygun. This can contain any extra data relating to the calling
  application's state you would like to see.
  @deprecated Call attachExceptionHandler(), then setUserCustomData(Map) instead