if (isJsonp) {
            buf.append(')');
        }
        write(buf.toString(), mimeType, Constants.UTF_8);
    }

    protected String escapeCallbackName(final String callbackName) {
        return "/**/" + callbackName.replaceAll("[^0-9a-zA-Z_\\$\\.]", StringUtil.EMPTY);
    }

    protected String escapeJson(final Object obj) {
        if (obj == null) {
            return "null";
        }