assertEquals("Custom minKey should match", "custom.min", customAnnotation.minKey());
        assertEquals("Custom maxKey should match", "custom.max", customAnnotation.maxKey());
        assertEquals("Annotation type should be CustomSize", CustomSize.class, customAnnotation.annotationType());
    }

    // Test annotation with empty keys
    @Test

/**
 * Wrapper for HTTP servlet requests in web API context.
 * This class extends HttpServletRequestWrapper to provide custom servlet path handling
 * for web API requests.
 */
public class WebApiRequest extends HttpServletRequestWrapper {
    /**
     * The custom servlet path for this web API request.
     */
    protected String servletPath;

    /**

        response.headers["X-Custom"] = "modified"
        return response

    @app.get("/")
    def endpoint(response: Annotated[Response, Depends(modify_response)]):
        return {"status": "ok"}

    client = TestClient(app)
    resp = client.get("/")

    assert resp.status_code == 200
    assert resp.json() == {"status": "ok"}
    assert resp.headers.get("X-Custom") == "modified"

# Run tests for specific module
mvn test -pl fess-crawler
```

## Examples

### Web Crawling with Custom Rules

```java
// Create crawler with custom configuration
StandardCrawlerContainer container = new StandardCrawlerContainer();

// Configure HTTP client with custom settings
container.singleton("httpClient", HcHttpClient.class, client -> {
    client.setUserAgent("MyBot/1.0");

        result = virtualHostHelper.processVirtualHost(s -> "processed_" + s, "default");
        assertEquals("processed_site1", result); // Still site1 due to header precedence

        // Test with custom header
        request.addHeader("Custom-Header", "custom.value");
        result = virtualHostHelper.processVirtualHost(s -> "processed_" + s, "default");
        assertEquals("processed_site1", result); // Still site1 due to header precedence
    }

  // be an empty string if no device was explicitly requested, but will
  // otherwise be the name of this custom device. Ops are placed onto a custom
  // device if any of their inputs are on that custom device, but custom devices
  // are free to set a bad status in order to require explicit placement.
  void (*execute)(const TFE_Op* op, int* num_outputs,

        "uid": "${DS_PROMETHEUS}"
      },
      "description": "",
      "fieldConfig": {
        "defaults": {
          "color": {
            "mode": "palette-classic"
          },
          "custom": {
            "hideFrom": {
              "legend": false,
              "tooltip": false,
              "viz": false
            }
          },
          "mappings": [
            {

    private int numOfFragments;
    /** The offset for fragment positioning. */
    private int fragmentOffset;
    /** Custom pre-tags for highlighting (null uses OpenSearch defaults). */
    private String[] preTags;
    /** Custom post-tags for highlighting (null uses OpenSearch defaults). */
    private String[] postTags;

    /**

///

## Custom Headers { #custom-headers }

Keep in mind that custom proprietary headers can be added [using the `X-` prefix](https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers).

@app.middleware("http")
async def custom_middleware(
    request: Request, call_next: Callable[[Request], Awaitable[Response]]
):
    response = await call_next(request)
    response.headers["custom"] = "foo"
    return response


@app.get("/user", dependencies=[Depends(set_up_request_state_dependency)])
def get_user():
    request_state = legacy_request_state_context_var.get()
    assert request_state