@Test
  fun multipartBodyPart() {
    val requestBody: RequestBody = "".toRequestBody(null)
    var part: MultipartBody.Part = MultipartBody.Part.create(null, requestBody)
    part = MultipartBody.Part.create(headersOf(), requestBody)
    part = MultipartBody.Part.create(requestBody)
    part = MultipartBody.Part.createFormData("", "")
    part = MultipartBody.Part.createFormData("", "", requestBody)

 * limitations under the License.
 */
package okhttp3

import java.io.IOException
import okio.BufferedSink

open class ForwardingRequestBody(delegate: RequestBody?) : RequestBody() {
  private val delegate: RequestBody

  fun delegate(): RequestBody {
    return delegate
  }

  override fun contentType(): MediaType? {
    return delegate.contentType()
  }

  @Throws(IOException::class)

    protected Map<String, Object> createTestParam(int id) {
        final Map<String, Object> requestBody = new HashMap<>();
        final String keyProp = NAME_PREFIX + id;
        requestBody.put(KEY_PROPERTY, keyProp);
        requestBody.put("boost_expr", new Integer(id).toString());
        requestBody.put("sort_order", id);
        return requestBody;
    }

    @Override
    protected Map<String, Object> getUpdateMap() {

import assertk.assertThat
import assertk.assertions.isEqualTo
import kotlin.test.Test
import okhttp3.RequestBody.Companion.toRequestBody

class CommonRequestBodyTest {
  @Test
  fun correctContentType() {
    val body = "Body"
    val requestBody = body.toRequestBody(MediaType("text/plain", "text", "plain", arrayOf()))

    val contentType = requestBody.contentType()!!

    assertThat(contentType.mediaType).isEqualTo("text/plain; charset=utf-8")

    // Use the imgur image upload API as documented at https://api.imgur.com/endpoints/image
    RequestBody requestBody = new MultipartBody.Builder()
        .setType(MultipartBody.FORM)
        .addFormDataPart("title", "Square Logo")
        .addFormDataPart("image", "logo-square.png",
            RequestBody.create(
                new File("docs/images/logo-square.png"),
                MEDIA_TYPE_PNG))
        .build();

fun Request.Builder.commonPost(body: RequestBody): Request.Builder = method("POST", body)

fun Request.Builder.commonDelete(body: RequestBody?): Request.Builder = method("DELETE", body)

fun Request.Builder.commonPut(body: RequestBody): Request.Builder = method("PUT", body)

fun Request.Builder.commonPatch(body: RequestBody): Request.Builder = method("PATCH", body)

fun Request.Builder.commonMethod(

            final Map<String, Object> requestBody = new HashMap<>(updateMap);
            requestBody.put("version_no", 1);
            final String idKey = getIdKey();
            if (setting.containsKey(idKey)) {
                requestBody.put(idKey, setting.get(idKey));
            }
            for (String key : keySet) {
                if (!requestBody.containsKey(key)) {

    }

    @Override
    protected Map<String, Object> createTestParam(int id) {
        final Map<String, Object> requestBody = new HashMap<>();
        final String keyProp = NAME_PREFIX + id;
        requestBody.put(KEY_PROPERTY, keyProp);
        requestBody.put("value", new Integer(id).toString());
        return requestBody;
    }

    @Override
    protected Map<String, Object> getUpdateMap() {

    }

    @Override
    protected Map<String, Object> createTestParam(int id) {
        final Map<String, Object> requestBody = new HashMap<>();
        final String keyProp = NAME_PREFIX + id;
        requestBody.put(KEY_PROPERTY, keyProp);
        requestBody.put("output", "output");
        return requestBody;
    }

    @Override
    protected Map<String, Object> getUpdateMap() {

    }

    @Override
    protected Map<String, Object> createTestParam(int id) {
        final Map<String, Object> requestBody = new HashMap<>();
        final String keyProp = NAME_PREFIX + id;
        requestBody.put(KEY_PROPERTY, keyProp);
        requestBody.put("queries", "query" + id);
        return requestBody;
    }

    @Override
    protected Map<String, Object> getUpdateMap() {