runtime.GC()
			var buf bytes.Buffer
			err := pprof.Lookup("heap").WriteTo(&buf, 0)
			return buf.Bytes(), err
		}
	case madmin.ProfilerBlock:
		runtime.SetBlockProfileRate(100)
		prof.stopFn = func() ([]byte, error) {
			var buf bytes.Buffer
			err := pprof.Lookup("block").WriteTo(&buf, 0)
			runtime.SetBlockProfileRate(0)
			return buf.Bytes(), err
		}
	case madmin.ProfilerMutex:

      }

      override fun writeTo(sink: BufferedSink) {
        sink.writeUtf8("<el")
        sink.flush()
        throw IOException("failed to stream the XML")
      }
    }

    class ValidRequestBody : RequestBody() {
      override fun contentType(): MediaType {
        return "application/xml".toMediaType()
      }

      override fun writeTo(sink: BufferedSink) {

class PostStreaming {
  private val client = OkHttpClient()

  fun run() {
    val requestBody =
      object : RequestBody() {
        override fun contentType() = MEDIA_TYPE_MARKDOWN

        override fun writeTo(sink: BufferedSink) {
          sink.writeUtf8("Numbers\n")
          sink.writeUtf8("-------\n")
          for (i in 2..997) {
            sink.writeUtf8(String.format(" * $i = ${factor(i)}\n"))
          }
        }

    public BufferedSink sink() {
      return sink;
    }

    @Override public MediaType contentType() {
      return MEDIA_TYPE_MARKDOWN;
    }

    @Override public void writeTo(BufferedSink sink) throws IOException {
      sink.writeAll(pipe.source());
    }
  }

  public static void main(String... args) throws Exception {
    new PostStreamingWithPipe().run();
  }

  public void run() throws Exception {
    RequestBody requestBody = new RequestBody() {
      @Override public MediaType contentType() {
        return MEDIA_TYPE_MARKDOWN;
      }

      @Override public void writeTo(BufferedSink sink) throws IOException {
        sink.writeUtf8("Numbers\n");
        sink.writeUtf8("-------\n");
        for (int i = 2; i <= 997; i++) {
          sink.writeUtf8(String.format(" * %s = %s\n", i, factor(i)));

	if err != nil && err != io.EOF {
		tr.err = err
	}
	return n, err
}

// writeTo writes the content of the current file to w.
// The bytes written matches the number of remaining bytes in the current file.
//
// If the current file is sparse and w is an io.WriteSeeker,
// then writeTo uses Seek to skip past holes defined in Header.SparseHoles,
// assuming that skipped regions are filled with NULs.

		buf.Write(fb)
	}
	buf.Write(frag)
	return buf.String(), err
}

// WriteTo implements io.WriterTo.
// This may make multiple calls to the [Reader.Read] method of the underlying [Reader].
// If the underlying reader supports the [Reader.WriteTo] method,
// this calls the underlying [Reader.WriteTo] without buffering.
func (b *Reader) WriteTo(w io.Writer) (n int64, err error) {
	b.lastByte = -1
	b.lastRuneSize = -1

  override fun contentType(): MediaType = CONTENT_TYPE

  override fun contentLength(): Long = writeOrCountBytes(null, true)

  @Throws(IOException::class)
  override fun writeTo(sink: BufferedSink) {
    writeOrCountBytes(sink, false)
  }

  /**
   * Either writes this request to [sink] or measures its content length. We have one method

      @Override public long contentLength() {
        return -1; // We don't know the compressed length in advance!
      }

      @Override public void writeTo(BufferedSink sink) throws IOException {
        BufferedSink gzipSink = Okio.buffer(new GzipSink(sink));
        body.writeTo(gzipSink);
        gzipSink.close();
      }
    };
  }
}
```

### Rewriting Responses

    var result = contentLength
    if (result == -1L) {
      result = writeOrCountBytes(null, true)
      contentLength = result
    }
    return result
  }

  @Throws(IOException::class)
  override fun writeTo(sink: BufferedSink) {
    writeOrCountBytes(sink, false)
  }

  /**
   * Either writes this request to [sink] or measures its content length. We have one method do