public void run() {
            AbstractFuture<String> future = setFutureFuture.get();
            setFutureSetSuccess.set(currentFuture.get().setFuture(future));
            setFutureCompletionSuccess.set(future.set("hello-async-world"));
            awaitUnchecked(barrier);
          }
        };
    Set<Object> finalResults = Collections.synchronizedSet(Sets.newIdentityHashSet());
    Runnable collectResultsRunnable =

});
```

### Text Processing and JSON
```java
import org.codelibs.core.text.*;

// JSON utilities with proper escaping
String escaped = JsonUtil.escape("Hello \"World\" with special chars");
String unescaped = JsonUtil.unescape(escaped);

// Text tokenization
Tokenizer tokenizer = new Tokenizer("field1,field2,field3", ",");
while (tokenizer.hasMoreTokens()) {

		UIntField:         1,
		UInt8Field:        1,
		UInt16Field:       1,
		UInt32Field:       1,
		UInt64Field:       1,
		Float32Field:      1.1,
		Float64Field:      1.1,
		StringField:       "hello",
		TimeField:         currTime,
		TimePtrField:      &currTime,
		EmbeddedStruct:    EmbeddedStruct{EmbeddedIntField: 1, NestedEmbeddedStruct: NestedEmbeddedStruct{NestedEmbeddedIntField: 1, NestedEmbeddedIntFieldWithDefault: 2}},

```

Противоположная *операция пути* в FastAPI может выглядеть следующим образом:

```Python hl_lines="1"
@app.get("/some/url")
def read_url():
    return {"message": "Hello World"}
```

Глядите, как похоже `requests.get(...)` и `@app.get(...)`.

/// check | Идеи для **FastAPI**

* Должен быть простой и понятный API.

```

Bunun FastAPI'deki API <abbr title="Yol İşlemi: Path Operation">*yol işlemi*</abbr> şöyle görünür:

```Python hl_lines="1"
@app.get("/some/url")
def read_url():
    return {"message": "Hello World!"}
```

`requests.get(...)` ile `@app.get(...)` arasındaki benzerliklere bakın.

/// check | **FastAPI**'a nasıl ilham verdi?

* Basit ve sezgisel bir API'ya sahip olmalı.

  }

  public void testToStringWithNull() {
    Iterator<@Nullable String> iterator =
        Lists.<@Nullable String>newArrayList("hello", null, "world").iterator();
    assertEquals("[hello, null, world]", Iterators.toString(iterator));
  }

  public void testToStringEmptyIterator() {
    Iterator<String> iterator = Collections.<String>emptyList().iterator();

### Check it { #check-it }

Open your browser at <a href="http://127.0.0.1:8000" class="external-link" target="_blank">http://127.0.0.1:8000</a>.

You will see the JSON response as:

```JSON
{"message": "Hello World"}
```

### Interactive API docs { #interactive-api-docs }

Now go to <a href="http://127.0.0.1:8000/docs" class="external-link" target="_blank">http://127.0.0.1:8000/docs</a>.

  }

  public void testToStringWithNull() {
    Iterator<@Nullable String> iterator =
        Lists.<@Nullable String>newArrayList("hello", null, "world").iterator();
    assertEquals("[hello, null, world]", Iterators.toString(iterator));
  }

  public void testToStringEmptyIterator() {
    Iterator<String> iterator = Collections.<String>emptyList().iterator();

    val request =
      Request(
        server.url("/"),
        body = "Hello".toRequestBody("text/plain".toMediaType()),
      )
    val response = client.newCall(request).execute()
    assertThat(response.body.string()).isEqualTo("Body")
    val request1 = server.takeRequest()
    assertThat(request1.body?.utf8()).isEqualTo("Hello")
    val request2 = server.takeRequest()

Por ejemplo, si tienes una función:

```Python
@lru_cache
def say_hi(name: str, salutation: str = "Ms."):
    return f"Hello {salutation} {name}"
```

tu programa podría ejecutarse así:

```mermaid
sequenceDiagram

participant code as Código
participant function as say_hi()
participant execute as Ejecutar función