if (testToken != null) {
            return;
        }
        given().contentType("application/json").delete(getEsUrl() + "/fess_config.access_token/_doc/" + DEFAULT_TEST_TOKEN_ID);
    }

    public static void refresh() {
        given().contentType("application/json").post(getEsUrl() + "/_refresh");
    }

    public static String getFessUrl() {

            @Override
            protected byte[] getBoundary(final String contentType) { // for security
                final byte[] boundary = super.getBoundary(contentType);
                checkBoundarySize(contentType, boundary);
                return boundary;
            }
        };
    }

    protected void checkBoundarySize(final String contentType, final byte[] boundary) {
        final int boundarySize = boundary.length;

        return FormatType.OTHER;
    }

    protected void write(final String text, final String contentType, final String encoding) {
        final StringBuilder buf = new StringBuilder(50);
        if (contentType == null) {
            buf.append("text/plain");
        } else {
            buf.append(contentType);
        }
        buf.append("; charset=");
        final String enc;
        if (encoding == null) {

    protected static Response deleteMethod(final String path) {
        return given().contentType("application/json").header("Authorization", getTestToken()).delete(path);
    }

    protected static void deleteDocuments(final String queryString) {
        List<String> docIds = new ArrayList<>();
        Response response = given().contentType("application/json").param("scroll", "1m").param("q", queryString)

            final String charset = responseData.getCharSet();
            if (charset != null) {
                response.contentType(mimeType + "; charset=" + charset);
                return;
            }
        }
        response.contentType(mimeType);
    }

    public String getClientIp(final HttpServletRequest request) {
        final String value = request.getHeader("x-forwarded-for");

        final String contentType = MimeTypeUtil.guessContentType(path);
        assertEquals("text/html", contentType);
    }

    /**
     * @throws Exception
     */
    @Test
    public void testGetFromStream_gif() throws Exception {
        final String path = ClassUtil.getPackageName(this.getClass()).replaceAll("\\.", "/") + "/ccc.gif";
        final String contentType = MimeTypeUtil.guessContentType(path);

            return redirect(ErrorAction.class);
        }

        final StreamResponse response = asStream(DocumentUtil.getValue(doc, fessConfig.getIndexFieldDocId(), String.class))
                .contentType("text/html; charset=UTF-8").data(content.getBytes(Constants.CHARSET_UTF_8));
        response.headerContentDispositionInline(); // TODO will be fixed in lastaflute
        return response;
    }

            }
            // 404
            throw responseManager.new404("Thumbnail for " + form.docId + " is under generating.");
        }

        return asStream(form.docId).contentType(getImageMimeType(thumbnailFile)).stream(out -> {
            try (BufferedInputStream in = new BufferedInputStream(new FileInputStream(thumbnailFile))) {
                out.write(in);
            }
        });
    }

        this.osddPath = osddPath;
    }

    public void setEncoding(final String encoding) {
        this.encoding = encoding;
    }

    public void setContentType(final String contentType) {
        this.contentType = contentType;
    }

        final CurlRequest curlRequest = ComponentUtil.getCurlHelper().request(httpMethod, path);

        final String contentType = request.getHeader("Content-Type");
        if (StringUtil.isNotEmpty(contentType)) {
            curlRequest.header("Content-Type", contentType);
        }

        request.getParameterMap().entrySet().stream().forEach(entry -> {
            if (entry.getValue().length > 1) {