override fun isOneShot(): Boolean = true

        override fun writeTo(sink: BufferedSink) {
          FileInputStream(this@toRequestBody).use {
            sink.buffer.writeAll(it.source())
          }
        }
      }

    /** Returns a new request body that transmits this. */
    @JvmOverloads
    @JvmStatic
    @JvmName("create")
    fun ByteArray.toRequestBody(

            gzippedLength = buffer.size
            GzipSource(buffer).use { gzippedResponseBody ->
              buffer = Buffer()
              buffer.writeAll(gzippedResponseBody)
            }
          }

          val charset: Charset = requestBody.contentType().charsetOrUtf8()

          logger.log("")
          if (!buffer.isProbablyUtf8(16L)) {