recV2 := httptest.NewRecorder()
		// construct HTTP request for Head Object endpoint.
		reqV2, err := newTestSignedRequestV2(http.MethodHead, getHeadObjectURL("", testCase.bucketName, testCase.objectName),
			0, nil, testCase.accessKey, testCase.secretKey, nil)
		if err != nil {
			t.Fatalf("Test %d: %s: Failed to create HTTP request for Head Object: <ERROR> %v", i+1, instanceType, err)
		}

          "interval": "1m",
          "intervalFactor": 2,
          "legendFormat": "{{instance}}",
          "range": true,
          "refId": "A"
        }
      ],
      "title": "Total Proxied Head Requests",
      "type": "timeseries"
    },
    {
      "datasource": {
        "type": "prometheus",
        "uid": "${DS_PROMETHEUS}"
      },
      "fieldConfig": {
        "defaults": {

//// tab | Python 3.10+

```Python hl_lines="1"
{!> ../../docs_src/python_types/tutorial009_py310.py!}
```

////

Using `str | None` instead of just `str` will let the editor help you detect errors where you could be assuming that a value is always a `str`, when it could actually be `None` too.

### Classes as types { #classes-as-types }

You can also declare a class as the type of a variable.

obligations, You may act only on Your own behalf and on Your sole 
responsibility, not on behalf of any other Contributor, and only if You 
agree to indemnify, defend, and hold each Contributor harmless for any 
liability incurred by, or claims asserted against, such Contributor by 

Al ✨ [**sponsorear FastAPI**](../help-fastapi.md#sponsor-the-author) ✨, estas compañías ayudan a asegurar que el framework y su **ecosistema** se mantengan saludables y **sustentables**.

        }

        @Override
        public Spliterator<Entry<K, V>> spliterator() {
          return IteratorBasedImmutableMap.this.entrySpliterator();
        }

        // redeclare to help optimizers with b/310253115
        @SuppressWarnings("RedundantOverride")
        @Override
        @J2ktIncompatible
        @GwtIncompatible
                Object writeReplace() {

            } catch (final Exception e) {
                throw new CurlException("Failed to access the response.", e);
            }
            writeContent(() -> {
                try {
                    if (Method.HEAD.toString().equalsIgnoreCase(con.getRequestMethod())) {
                        return new ByteArrayInputStream(new byte[0]);
                    } else if (con.getResponseCode() < 400) {

  <modelVersion>4.0.0</modelVersion>
  <parent>
    <groupId>com.google.guava</groupId>
    <artifactId>guava-parent</artifactId>
    <version>999.0.0-HEAD-jre-SNAPSHOT</version>
  </parent>
  <artifactId>guava-gwt</artifactId>
  <name>Guava GWT compatible libs</name>
  <description>
    Guava is a suite of core and expanded libraries that include

    }
  }

  @Test
  fun head() {
    server.enqueue(
      MockResponse(
        headers = headersOf("Content-Type", "text/plain"),
      ),
    )
    val request =
      Request
        .Builder()
        .url(server.url("/"))
        .head()
        .header("User-Agent", "SyncApiTest")
        .build()
    executeSynchronously(request)

But once you know the basic information of **HTTPS for developers** you can easily combine and configure different tools to help you manage everything in a simple way.