session.addAssistantMessage("Assistant 2");
        session.addUserMessage("User 3");
        session.addAssistantMessage("Assistant 3");
        assertEquals(6, session.getMessageCount());

        // Trimming to 3 would start at index 3 (assistant), so it should go back to index 2 (user)
        session.trimHistory(3);

        final List<ChatMessage> messages = session.getMessages();
        assertEquals(4, messages.size());

    assertThat(CharMatcher.any().collapseFrom("ab", '_')).isEqualTo("_");
    assertThat(CharMatcher.any().collapseFrom("abcd", '_')).isEqualTo("_");
  }

  public void testTrimFrom() {
    // trimming -
    doTestTrimFrom("-", "");
    doTestTrimFrom("x-", "x");
    doTestTrimFrom("-x", "x");
    doTestTrimFrom("--", "");
    doTestTrimFrom("x--", "x");
    doTestTrimFrom("--x", "x");

    //
    // 9) Execute AbstractLifecycleParticipant.afterProjectsRead(session)
    //
    // 10) Create ProjectDependencyGraph without trimming (as trimming was done in 7). A new topological sort is
    // required after the execution of 9) as the AbstractLifecycleParticipants are free to mutate the MavenProject

 *   <li><strong>Root Attribute</strong>: Adds {@code root="true"} attribute to root project</li>
 *   <li><strong>Parent Element Trimming</strong>:
 *     <ul>
 *       <li>Removes parent {@code <groupId>} when child has no explicit groupId</li>
 *       <li>Removes parent {@code <version>} when child has no explicit version</li>

        Element parentElement = root.child(PARENT).orElse(null);
        if (parentElement == null) {
            return false;
        }

        // Apply full inference (parent element trimming based on relativePath)
        return trimParentElementFull(context, root, parentElement, pomMap);
    }

    /**
     * Applies dependency-related inference optimizations.

          // Four byte characters
          FOUR_BYTE_ROUNDTRIPPABLE_CHARACTERS;

  /** Tests that round tripping of all two byte permutations work. */
  @GwtIncompatible // java.nio.charset.Charset
  public void testIsWellFormed_1Byte() {
    testBytes(1, EXPECTED_ONE_BYTE_ROUNDTRIPPABLE_COUNT);
  }

  /** Tests that round tripping of all two byte permutations work. */
  @GwtIncompatible // java.nio.charset.Charset

    # Return some error
    ...
```

But by using the `secrets.compare_digest()` it will be secure against a type of attacks called "timing attacks".

### Timing Attacks { #timing-attacks }

But what's a "timing attack"?

Let's imagine some attackers are trying to guess the username and password.

And they send a request with a username `johndoe` and a password `love123`.

    # Bir hata döndür
    ...
```

Ancak `secrets.compare_digest()` kullanarak, "timing attacks" denilen bir saldırı türüne karşı güvenli olursunuz.

### Timing Attacks { #timing-attacks }

Peki "timing attack" nedir?

Bazı saldırganların kullanıcı adı ve şifreyi tahmin etmeye çalıştığını düşünelim.

    # Devuelve algún error
    ...
```

Pero al usar `secrets.compare_digest()` será seguro contra un tipo de ataques llamados "timing attacks".

### Timing attacks { #timing-attacks }

¿Pero qué es un "timing attack"?

Imaginemos que algunos atacantes están tratando de adivinar el nombre de usuario y la contraseña.

    # Einen Error zurückgeben
    ...
```

Aber durch die Verwendung von `secrets.compare_digest()` ist dieser Code sicher vor einer Art von Angriffen, die „Timing-Angriffe“ genannt werden.

### Timing-Angriffe { #timing-attacks }

Aber was ist ein „Timing-Angriff“?

Stellen wir uns vor, dass einige Angreifer versuchen, den Benutzernamen und das Passwort zu erraten.