Например, скажем, вы хотите создать *операцию пути*, которая позволяет обновлять элементы и возвращает HTTP-код 200 "OK" при успешном выполнении.

Но вы также хотите, чтобы она принимала новые элементы. И если элемент ранее не существовал, он создаётся, и возвращался HTTP-код 201 "Created".

     *
     * @param server the server name to enumerate DFS roots from
     */
    public MsrpcDfsRootEnum(final String server) {
        super(server, 200, 0xFFFF, new netdfs.DfsEnumStruct(), new NdrLong(0));
        this.info.level = this.level;
        this.info.e = new netdfs.DfsEnumArray200();
        this.ptype = 0;
        this.flags = DCERPC_FIRST_FRAG | DCERPC_LAST_FRAG;

Angenommen, Sie möchten eine *Pfadoperation* haben, die das Aktualisieren von Artikeln ermöglicht und bei Erfolg den HTTP-Statuscode 200 „OK“ zurückgibt.

Sie möchten aber auch, dass sie neue Artikel akzeptiert. Und wenn die Elemente vorher nicht vorhanden waren, werden diese Elemente erstellt und der HTTP-Statuscode 201 „Created“ zurückgegeben.

Por exemplo, vamos dizer que você deseja ter uma *operação de caminho* que permita atualizar itens, e retornar um código de status HTTP 200 "OK" quando for bem sucedido.

Mas você também deseja aceitar novos itens. E quando os itens não existiam, ele os cria, e retorna o código de status HTTP 201 "Created.

 * users should prefer the {@link ValueGraph} interface.
 *
 * @author James Sexton
 * @param <N> Node parameter type
 * @param <V> Value parameter type
 * @since 20.0
 */
@Beta
public interface MutableValueGraph<N, V> extends ValueGraph<N, V> {

  /**
   * Adds {@code node} if it is not already present.
   *

🛠️ 📨 2️⃣ 🎯 🆎 🇺🇸🔍 📨...

### ⚜ 🛫 📨

👉 🙆 `OPTIONS` 📨 ⏮️ `Origin` & `Access-Control-Request-Method` 🎚.

👉 💼 🛠️ 🔜 🆘 📨 📨 & 📨 ⏮️ ☑ ⚜ 🎚, & 👯‍♂️ `200` ⚖️ `400` 📨 🎓 🎯.

### 🙅 📨

🙆 📨 ⏮️ `Origin` 🎚. 👉 💼 🛠️ 🔜 🚶‍♀️ 📨 🔘 😐, ✋️ 🔜 🔌 ☑ ⚜ 🎚 🔛 📨.

## 🌅 ℹ

In short:

* `100 - 199` are for "Information". You rarely use them directly.  Responses with these status codes cannot have a body.
* **`200 - 299`** are for "Successful" responses. These are the ones you would use the most.
    * `200` is the default status code, which means everything was "OK".
    * Another example would be `201`, "Created". It is commonly used after creating a new record in the database.

      <version>1.5.3</version>
      <version>1.5.4</version>
      <version>1.5.5</version>
      <version>1.5.6</version>
      <version>1.5.7</version>
      <version>1.5.8</version>
      <version>2.0.0</version>
      <version>2.0.1</version>
      <version>2.0.2</version>
      <version>2.0.3</version>
      <version>2.0.4</version>
      <version>2.1.0</version>
      <version>2.1.1</version>

      <version>1.5.3</version>
      <version>1.5.4</version>
      <version>1.5.5</version>
      <version>1.5.6</version>
      <version>1.5.7</version>
      <version>1.5.8</version>
      <version>2.0.0</version>
      <version>2.0.1</version>
      <version>2.0.2</version>
      <version>2.0.3</version>
      <version>2.0.4</version>
      <version>2.1.0</version>
      <version>2.1.1</version>

 * more efficient implementation.
 *
 * @author James Sexton
 * @param <N> Node parameter type
 * @param <V> Value parameter type
 * @since 20.0
 */
@Beta
public abstract class AbstractValueGraph<N, V> extends AbstractBaseGraph<N>
    implements ValueGraph<N, V> {
  /** Constructor for use by subclasses. */
  public AbstractValueGraph() {}

  @Override