- **Crawl Sources**: URLs, file shares, databases being indexed
- **Custom Configurations**: URL patterns, security rules, metadata fields
- **Search Features**: Facets, suggestions, security filtering, ranking rules
- **Integration Points**: Applications consuming search APIs
- **User Permissions**: Access control and label configurations

### 2. Infrastructure Requirements

      Collection<E> unfiltered, Predicate<? super E> predicate) {
    if (unfiltered instanceof FilteredCollection) {
      // Support clear(), removeAll(), and retainAll() when filtering a filtered
      // collection.
      return ((FilteredCollection<E>) unfiltered).createCombined(predicate);
    }

    return new FilteredCollection<>(checkNotNull(unfiltered), checkNotNull(predicate));
  }

    /**
     * Returns list of elevate word settings.
     * Supports both GET and PUT requests for retrieving paginated elevate word configurations.
     *
     * @param body search parameters for filtering and pagination
     * @return JSON response containing elevate word settings list with pagination info
     */
    @Execute
    public JsonResponse<ApiResult> settings(final SearchBody body) {

        // The iterator returns null when no elements, doesn't throw exception
        assertNull(iterator.next(), "Should return null when no next element");
    }

    /**
     * Test multiple iterations with mixed filtering results.
     */
    @Test
    void testMultipleIterationsWithFilter() throws Exception {
        // Given
        when(mockDelegate.hasNext()).thenReturn(true, true, true, false);

    protected SearchEngineClient searchEngineClient;

    /**
     * Retrieves a paginated list of elevate words based on the provided pager criteria.
     *
     * @param elevateWordPager the pager containing pagination and filtering criteria
     * @return list of elevate words matching the criteria
     */
    public List<ElevateWord> getElevateWordList(final ElevateWordPager elevateWordPager) {

 *
 * Features:
 * - Directory traversal prevention
 * - Path normalization
 * - Blacklist/whitelist support
 * - UNC path validation
 * - Special character filtering
 * - Length validation
 */
public class PathValidator {

    private static final Logger log = LoggerFactory.getLogger(PathValidator.class);

    // Path traversal patterns

import jakarta.annotation.Resource;

/**
 * The Crawler class is the main class for web crawling. It manages the crawling process,
 * including adding URLs to the queue, filtering URLs, managing crawler threads,
 * and handling the overall crawling lifecycle.
 *
 * <p>It implements the Runnable interface to be executed in a separate thread,

                * Serialization: you could return an arbitrary object and the
                    `response_model` would be used to serialize that object into the
                    corresponding JSON.
                * Filtering: the JSON sent to the client will only contain the data
                    (fields) defined in the `response_model`. If you returned an object
                    that contains an attribute `password` but the `response_model` does

在這種情況下，因為兩個模型不同，如果我們把函式回傳型別註解為 `UserOut`，編輯器和工具會抱怨我們回傳了無效的型別，因為它們是不同的類別。

這就是為什麼在這個例子中我們必須在 `response_model` 參數中宣告它。

...但繼續往下讀看看如何克服這個問題。

## 回傳型別與資料過濾 { #return-type-and-data-filtering }

讓我們延續前一個範例。我們想要用一種型別來註解函式，但實際上希望能夠從函式回傳包含更多資料的內容。

我們希望 FastAPI 仍然用回應模型來過濾資料。這樣即使函式回傳更多資料，回應中也只會包含回應模型中宣告的欄位。

在前一個例子中，因為類別不同，我們必須使用 `response_model` 參數。但這也代表我們失去了編輯器與工具對函式回傳型別的檢查支援。

	"github.com/minio/kms-go/kms"
	"github.com/minio/madmin-go/v3"
)

// ListRequest is a structure containing fields
// and options for listing keys.
type ListRequest struct {
	// Prefix is an optional prefix for filtering names.
	// A list operation only returns elements that match
	// this prefix.
	// An empty prefix matches any value.
	Prefix string

	// ContinueAt is the name of the element from where