assertEquals("2group-name", permissionHelper.encode("{group}group-name"));
        assertEquals("Rrole.name", permissionHelper.encode("{role}role.name"));
        assertEquals("1user_123", permissionHelper.encode("{user}user_123"));
        assertEquals("2group$special", permissionHelper.encode("{group}group$special"));
    }

    public void test_decode_withComplexValues() {

```

### Index from Query Logs

```java
import org.codelibs.fess.suggest.index.contents.querylog.QueryLog;

// Add suggestions from search query logs
QueryLog queryLog = new QueryLog("user search query", "user123");
suggester.indexer().indexFromQueryLog(queryLog);
```

### Popular Words Analytics

```java
import org.codelibs.fess.suggest.request.popularwords.PopularWordsResponse;

        assertEquals("\\", InputValidator.normalizeSmbPath("\\"));
    }

    @ParameterizedTest
    @DisplayName("Test valid usernames")
    @ValueSource(strings = { "user", "user123", "user.name", "user-name", "user_name", "******@****.***" })
    void testValidUsernames(String username) {
        assertDoesNotThrow(() -> InputValidator.validateUsername(username));
    }

    @ParameterizedTest