},
                        },
                    },
                    "summary": "Update Item",
                    "operationId": "update_item_items__item_id__put",
                    "requestBody": {
                        "content": {
                            "application/json": {
                                "schema": {
                                    "$ref": "#/components/schemas/Item",

                            },
                        },
                    },
                    "summary": "Login",
                    "operationId": "login_token_post",
                    "requestBody": {
                        "content": {
                            "application/x-www-form-urlencoded": {
                                "schema": {

    assertFailsWith<IOException> {
      call.execute()
    }
    assertThat(callRef.get()).isSameInstanceAs(call)
  }

  private fun uppercase(original: RequestBody?): RequestBody =
    object : RequestBody() {
      override fun contentType(): MediaType? = original!!.contentType()

      override fun contentLength(): Long = original!!.contentLength()

                    "operationId": "create_item_items__post",
                    "requestBody": {
                        "content": {
                            "application/json": {
                                "schema": {"$ref": "#/components/schemas/Item"}
                            }

```java
public static final MediaType JSON = MediaType.get("application/json");

OkHttpClient client = new OkHttpClient();

String post(String url, String json) throws IOException {
  RequestBody body = RequestBody.create(json, JSON);
  Request request = new Request.Builder()
      .url(url)
      .post(body)
      .build();
  try (Response response = client.newCall(request).execute()) {

                                "title": "Item Id",
                                "type": "integer",
                            },
                        },
                    ],
                    "requestBody": {
                        "content": {
                            "application/json": {
                                "schema": {

                },
                "post": {
                    "tags": ["items"],
                    "summary": "Create Item",
                    "operationId": "create_item_items__post",
                    "requestBody": {
                        "content": {
                            "application/json": {
                                "schema": {"$ref": "#/components/schemas/Item"}
                            }

                                    "title": "Q",
                                },
                            }
                        ],
                        "requestBody": {
                            "required": True,
                            "content": {
                                "application/json": {
                                    "schema": {

                            },
                        },
                    },
                    "summary": "Create Item",
                    "operationId": "create_item_items__post",
                    "requestBody": {
                        "content": {
                            "application/json": {
                                "schema": {"$ref": "#/components/schemas/Item"}
                            }

                        },
                    },
                    "summary": "Create Multiple Images",
                    "operationId": "create_multiple_images_images_multiple__post",
                    "requestBody": {
                        "content": {
                            "application/json": {
                                "schema": {
                                    "title": "Images",