private val client = OkHttpClient()

      fun run() {
        // Use the imgur image upload API as documented at https://api.imgur.com/endpoints/image
        val requestBody = MultipartBody.Builder()
            .setType(MultipartBody.FORM)
            .addFormDataPart("title", "Square Logo")
            .addFormDataPart("image", "logo-square.png",
                File("docs/images/logo-square.png").asRequestBody(MEDIA_TYPE_PNG))

                                            .setSource(source, XContentType.JSON);
                                    if (createOnly) {
                                        requestBuilder.setOpType(OpType.CREATE);
                                    }
                                    builder.add(requestBuilder);
                                }
                            }