private static void check(String name, Object object, String suggestion) {
        if (object == null) {
            StringBuilder message = new StringBuilder(name);
            message.append(" must not be null");
            if (suggestion != null) {
                message.append(", ");
                message.append(suggestion);
            }
            throw new NullPointerException(message.toString());
        }
    }
Temporarily paused by the system, may be restarted.
core/src/main/java/com/bumptech/glide/request/GenericRequest.java