r := NewReader(rw)
		if _, err := r.WriteTo(rw); err != rw.expected {
			t.Errorf("r.WriteTo(errorWriterToTests[%d]) = _, %v, want _,%v", i, err, rw.expected)
		}
	}
}

func TestWriterReadFrom(t *testing.T) {
	ws := []func(io.Writer) io.Writer{
		func(w io.Writer) io.Writer { return onlyWriter{w} },
		func(w io.Writer) io.Writer { return w },
	}

	rs := []func(io.Reader) io.Reader{

  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)));

      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();
  }

        body.writeTo(sink)
      }

      sink.write(CRLF)
    }

    sink!!.write(DASHDASH)
    sink.write(boundaryByteString)
    sink.write(DASHDASH)
    sink.write(CRLF)

    if (countBytes) {
      byteCount += byteCountBuffer!!.size
      byteCountBuffer.clear()
    }

    return byteCount
  }

  class Part private constructor(

   * versions.
   */
  public byte[] toByteArray() {
    ByteBuffer buffer = ByteBuffer.allocate(BYTES).order(ByteOrder.LITTLE_ENDIAN);
    xStats.writeTo(buffer);
    yStats.writeTo(buffer);
    buffer.putDouble(sumOfProductsOfDeltas);
    return buffer.array();
  }

  /**
   * Creates a {@link PairedStats} instance from the given byte representation which was obtained by

            override fun writeTo(sink: BufferedSink) {
              val a1024x1024 = "a".repeat(1024 * 1024)
              repeat(100) {
                sink.writeUtf8(a1024x1024)
              }
            }
          },
        ).build()
    val buffer = Buffer()
    multipartBody.writeTo(buffer)

    val multipartReader = MultipartReader(buffer, "foo")

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"))
          }
        }

import java.io.File
import okio.FileSystem
import okio.Path.Companion.toPath

fun main(vararg args: String) {
  val data = loadIdnaMappingTableData()
  val file = generateMappingTableFile(data)
  file.writeTo(File(args[0]))
}

fun loadIdnaMappingTableData(): IdnaMappingTableData {
  val path = "/okhttp3/internal/idna/IdnaMappingTable.txt".toPath()
  val table =
    FileSystem.RESOURCES.read(path) {

	i := copy(b2, b)
	return b2[:i]
}

// WriteTo writes data to w until the buffer is drained or an error occurs.
// The return value n is the number of bytes written; it always fits into an
// int, but it is int64 to match the [io.WriterTo] interface. Any error
// encountered during the write is also returned.
func (b *Buffer) WriteTo(w io.Writer) (n int64, err error) {
	b.lastRead = opInvalid

pkg math/rand/v2, type Source interface { Uint64 } #61716
pkg math/rand/v2, type Source interface, Uint64() uint64 #61716
pkg math/rand/v2, type Zipf struct #61716
pkg net, method (*TCPConn) WriteTo(io.Writer) (int64, error) #58808
pkg net/http, func FileServerFS(fs.FS) Handler #51971
pkg net/http, func NewFileTransportFS(fs.FS) RoundTripper #51971
pkg net/http, func ServeFileFS(ResponseWriter, *Request, fs.FS, string) #51971