"/items/": {
                "get": {
                    "responses": {
                        "200": {
                            "description": "Successful Response",
                            "content": {"application/json": {"schema": {}}},
                        }
                    },
                    "summary": "Read Items",
                    "operationId": "read_items_items__get",
                }

                    "operationId": "main__get",
                    "responses": {
                        "200": {
                            "description": "Successful Response",
                            "content": {"text/plain": {"schema": {"type": "string"}}},
                        }
                    },
                }
            }
        },

    * Another example would be `201`, "Created". It is commonly used after creating a new record in the database.
    * A special case is `204`, "No Content".  This response is used when there is no content to return to the client, and so the response must not have a body.

* `allow_methods` - 📇 🇺🇸🔍 👩‍🔬 👈 🔜 ✔ ✖️-🇨🇳 📨. 🔢 `['GET']`. 👆 💪 ⚙️ `['*']` ✔ 🌐 🐩 👩‍🔬.
* `allow_headers` - 📇 🇺🇸🔍 📨 🎚 👈 🔜 🐕‍🦺 ✖️-🇨🇳 📨. 🔢 `[]`. 👆 💪 ⚙️ `['*']` ✔ 🌐 🎚. `Accept`, `Accept-Language`, `Content-Language` &amp; `Content-Type` 🎚 🕧 ✔ <a href="https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS#simple_requests" class="external-link" rel="noopener" target="_blank">🙅 ⚜ 📨</a>.

                        "200": {
                            "description": "Successful Response",
                            "content": {"application/json": {"schema": {}}},
                        },
                        "422": {
                            "description": "Validation Error",
                            "content": {
                                "application/json": {
                                    "schema": {

                        "200": {
                            "description": "Successful Response",
                            "content": {"application/json": {"schema": {}}},
                        },
                        "422": {
                            "description": "Validation Error",
                            "content": {
                                "application/json": {
                                    "schema": {

                        "200": {
                            "description": "Successful Response",
                            "content": {"application/json": {"schema": {}}},
                        },
                        "422": {
                            "description": "Validation Error",
                            "content": {
                                "application/json": {
                                    "schema": {

            assertEquals("text/plain", responseData.getMimeType());
            assertTrue(responseData.getUrl().endsWith("text1.txt"));
            final String content = new String(InputStreamUtil.getBytes(responseData.getResponseBody()), "UTF-8");
            assertEquals("test1", content.trim());
        } finally {
            if (server != null) {
                server.stop();
            }
        }
    }

                    "operationId": "redirect_typer_typer_get",
                    "responses": {
                        "200": {
                            "description": "Successful Response",
                            "content": {"application/json": {"schema": {}}},
                        }
                    },
                }
            }
        },

	testCases := []struct {
		header     http.Header
		metadata   map[string]string
		shouldFail bool
	}{
		// Validate if there a known 'content-type'.
		{
			header: http.Header{
				"Content-Type": []string{"image/png"},
			},
			metadata: map[string]string{
				"content-type": "image/png",
			},
			shouldFail: false,
		},
		// Validate if there are no keys to extract.
		{
			header: http.Header{