import okhttp3.Headers.Companion.headersOf
import okhttp3.MediaType.Companion.toMediaType
import okhttp3.MediaType.Companion.toMediaTypeOrNull
import okhttp3.RequestBody.Companion.toRequestBody
import okio.Buffer
import okio.BufferedSink
import okio.utf8Size
import org.junit.jupiter.api.Test

class MultipartBodyTest {
  @Test
  fun onePartRequired() {
    assertFailsWith<IllegalStateException> {
      MultipartBody.Builder().build()

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3.internal.idn

import java.io.IOException
import okio.Buffer
import okio.BufferedSink
import okio.BufferedSource
import okio.ByteString
import okio.ByteString.Companion.encodeUtf8
import okio.Options

/**
 * A decoded [mapping table] that can perform the [mapping step] of IDNA processing.
 *

 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3.internal.idn

import okio.BufferedSink

/**
 * An IDNA mapping table optimized for small code and data size.
 *
 * Code Points in Sections
 * =======================
 *

 * limitations under the License.
 */
@file:Suppress("ktlint:standard:filename")

package okhttp3.internal

import okio.ArrayIndexOutOfBoundsException
import okio.Buffer
import okio.BufferedSink
import okio.BufferedSource
import okio.ByteString.Companion.decodeHex
import okio.Closeable
import okio.FileNotFoundException
import okio.FileSystem
import okio.IOException
import okio.Options
import okio.Path

import okhttp3.Response
import okhttp3.TestUtil.repeat
import okhttp3.internal.concurrent.TaskFaker
import okhttp3.internal.connection.BufferedSocket
import okhttp3.internal.ws.WebSocketExtensions.Companion.parse
import okio.BufferedSink
import okio.BufferedSource
import okio.ByteString.Companion.decodeHex
import okio.ByteString.Companion.encodeUtf8
import okio.ForwardingSink
import okio.ForwardingSource
import okio.Socket
import okio.buffer

import okhttp3.internal.http.CancelTest.ConnectionType.HTTP
import okhttp3.internal.http.CancelTest.ConnectionType.HTTPS
import okhttp3.testing.PlatformRule
import okio.Buffer
import okio.BufferedSink
import org.junit.jupiter.api.Assertions.assertEquals
import org.junit.jupiter.api.Tag
import org.junit.jupiter.api.Timeout
import org.junit.jupiter.api.extension.RegisterExtension

import okhttp3.Request
import okhttp3.RequestBody
import okhttp3.RequestBody.Companion.toRequestBody
import okhttp3.logging.HttpLoggingInterceptor.Level
import okhttp3.testing.PlatformRule
import okio.Buffer
import okio.BufferedSink
import okio.ByteString.Companion.decodeBase64
import org.junit.jupiter.api.Assertions.fail
import org.junit.jupiter.api.Assumptions
import org.junit.jupiter.api.BeforeEach
import org.junit.jupiter.api.Test

      }

      @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

import okhttp3.internal.RecordingOkAuthenticator
import okhttp3.internal.duplex.AsyncRequestBody
import okhttp3.internal.duplex.MockSocketHandler
import okhttp3.testing.PlatformRule
import okio.BufferedSink
import org.junit.jupiter.api.AfterEach
import org.junit.jupiter.api.Assertions.assertTrue
import org.junit.jupiter.api.BeforeEach
import org.junit.jupiter.api.Disabled
import org.junit.jupiter.api.Tag

HSPLokio/RealBufferedSink;->emitCompleteSegments()Lokio/BufferedSink;
HSPLokio/RealBufferedSink;->flush()V
HSPLokio/RealBufferedSink;->write(Lokio/Buffer;J)V
HSPLokio/RealBufferedSink;->write(Lokio/ByteString;)Lokio/BufferedSink;
HSPLokio/RealBufferedSink;->write([BII)Lokio/BufferedSink;
HSPLokio/RealBufferedSink;->writeByte(I)Lokio/BufferedSink;
HSPLokio/RealBufferedSink;->writeInt(I)Lokio/BufferedSink;