private static final String LIST_ENDPOINT_SUFFIX = "settings";
    private static final String ITEM_ENDPOINT_SUFFIX = "setting";

    private static final String KEY_PROPERTY = "name";

    @Override
    protected String getNamePrefix() {
        return NAME_PREFIX;
    }

    @Override
    protected String getApiPath() {
        return API_PATH;
    }

    @Override

    adapter.configureTlsExtensions(sslSocket, null, listOf(HTTP_2, HTTP_1_1))
    // not connected
    assertNull(adapter.getSelectedProtocol(sslSocket))
  }

  companion object {
    @JvmStatic
    @Parameters(name = "{0}")
    fun data(): Collection<SocketAdapter> =
      listOfNotNull(
        DeferredSocketAdapter(ConscryptSocketAdapter.factory),
        DeferredSocketAdapter(AndroidSocketAdapter.factory("org.conscrypt")),

 *
 */
public class UserAgentHelper {

    /**
     * Default constructor for UserAgentHelper.
     */
    public UserAgentHelper() {
        // Default constructor
    }

    /** The HTTP header name for User-Agent */
    protected static final String USER_AGENT = "user-agent";

    /** The request attribute key for storing cached user agent type */
    protected static final String USER_AGENT_TYPE = "ViewHelper.UserAgent";

{* ../../docs_src/python_types/tutorial009c.py hl[1,4] *}


`name` প্যারামিটারটি `Optional[str]` হিসেবে সংজ্ঞায়িত হয়েছে, কিন্তু এটি **অপশনাল নয়**, আপনি প্যারামিটার ছাড়া ফাংশনটি কল করতে পারবেন না:

```Python
say_hi()  # ওহ না, এটি একটি ত্রুটি নিক্ষেপ করবে! 😱
```

`name` প্যারামিটারটি **এখনও আবশ্যিক** (নন-অপশনাল) কারণ এটির কোনো ডিফল্ট মান নেই। তবুও, `name` এর মান হিসেবে `None` গ্রহণযোগ্য:

```Python

        assertEquals(25, dataconfigpager.getPageSize());
        assertEquals(1, dataconfigpager.getCurrentPageNumber());
        assertNull(dataconfigpager.id);
        assertNull(dataconfigpager.name);
        assertNull(dataconfigpager.handlerName);
        assertNull(dataconfigpager.boost);
        assertNull(dataconfigpager.available);
        assertNull(dataconfigpager.sortOrder);

    val response = readHttp2HeadersList(headerBlock, Protocol.HTTP_2).request(request).build()
    val headers = response.headers
    assertThat(headers.size).isEqualTo(1)
    assertThat(headers.name(0)).isEqualTo(":version")
    assertThat(headers.value(0)).isEqualTo("HTTP/1.1")
  }

  @Test fun http2HeadersListDropsForbiddenHeadersHttp2() {
    val request =
      Request
        .Builder()

        try {
            final RESULT result = entityType.newInstance();
            result.setName(DfTypeUtil.toString(source.get("name")));
            return updateEntity(source, result);
        } catch (InstantiationException | IllegalAccessException e) {
            final String msg = "Cannot create a new instance: " + entityType.getName();

            result.setCreatedBy(DfTypeUtil.toString(source.get("createdBy")));
            result.setCreatedTime(DfTypeUtil.toLong(source.get("createdTime")));
            result.setName(DfTypeUtil.toString(source.get("name")));
            result.setUpdatedBy(DfTypeUtil.toString(source.get("updatedBy")));
            result.setUpdatedTime(DfTypeUtil.toLong(source.get("updatedTime")));

and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. Neither the name of the copyright holders nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"...

    }

    void ssn139() throws IOException {
        final CIFSContext tc = this.transportContext;
        final Name calledName = new Name(tc.getConfig(), this.address.firstCalledName(), 0x20, null);
        do {
            this.socket = new Socket();
            if (this.localAddr != null) {