Handle 207 codes in move method properly

                    .execute()

        }.use { response ->

            checkStatus(response)

            if (response.code() == 207)

            /* Multiple resources were to be affected by the MOVE, but errors on some

                of them prevented the operation from taking place.

                [_] (RFC 4918 9.9.4. Status Codes for MOVE Method) */

                throw HttpException(response)

            callback(response)

        }

    }