//                                                                      Search Execute
    //                                                                      ==============
    @Execute
    public HtmlResponse index(final SearchForm form) {
        return search(form);
    }

    @Execute
    public HtmlResponse advance(final SearchForm form) {
        if (isLoginRequired()) {
            return redirectToLogin();
        }

///

**FastAPI** está todo basado en Pydantic.

Vas a ver mucho más de esto en práctica en el [Tutorial - User Guide](tutorial/index.md){.internal-link target=_blank}.

## Type hints en **FastAPI**

**FastAPI** aprovecha estos type hints para hacer varias cosas.

Con **FastAPI** declaras los parámetros con type hints y obtienes:

    TF_EXCLUSIVE_LOCKS_REQUIRED(fn_body->mu) {
  input_tensors->reserve(ninputs);
  for (int i = 0; i < ninputs; ++i) {
    Node* node = inputs[i].oper ? &inputs[i].oper->node : nullptr;
    int idx = inputs[i].index;

    TF_RETURN_WITH_CONTEXT_IF_ERROR(
        fn_body->graph.IsValidOutputTensor(node, idx),
        "Encountered while processing input ", i, " into function '", fn_name,
        "'");

@SuppressWarnings("JUnit4ClassUsedInJUnit3")
public abstract class AbstractListIndexOfTester<E> extends AbstractListTester<E> {
  /** Override to call {@code indexOf()} or {@code lastIndexOf()}. */
  protected abstract int find(@Nullable Object o);

  /** Override to return "indexOf" or "lastIndexOf()" for use in failure messages. */
  protected abstract String getMethodName();

  @CollectionSize.Require(absent = ZERO)

                String iface = (String)INTERFACES.get(lep.substring(6));
                if (iface != null) {
                    int c, p;
                    c = iface.indexOf(':');
                    p = iface.indexOf('.', c + 1);
                    uuid = new UUID(iface.substring(0, c));
                    major = Integer.parseInt(iface.substring(c + 1, p));

/// info

In this example we use invented custom headers `X-Key` and `X-Token`.

But in real cases, when implementing security, you would get more benefits from using the integrated [Security utilities (the next chapter)](../security/index.md){.internal-link target=_blank}.

///

## Dependencies errors and return values

You can use the same dependency *functions* you use normally.

### Dependency requirements

    //                                                                       Login Execute
    //                                                                      ==============

    @Execute
    public HtmlResponse index() {
        getSession().ifPresent(session -> session.removeAttribute(INVALID_OLD_PASSWORD));
        return asIndexPage(null).useForm(LoginForm.class);
    }

    private HtmlResponse asIndexPage(final LoginForm form) {

import org.codelibs.fess.es.config.cbean.cq.bs.BsFileConfigCQ;
import org.dbflute.cbean.ConditionQuery;
import org.opensearch.action.search.SearchRequestBuilder;
import org.opensearch.index.query.QueryBuilder;

/**
 * @author ESFlute (using FreeGen)
 */
public class BsFileConfigCB extends EsAbstractConditionBean {

    // ===================================================================================

import org.junit.AfterClass;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.Test;
import org.opensearch.action.admin.indices.analyze.AnalyzeAction.AnalyzeToken;
import org.opensearch.index.IndexNotFoundException;

public class AnalyzerSettingsTest {
    String id = "analyzerSettingsTest";

    static SuggestSettings settings;

    static OpenSearchRunner runner;

    @BeforeClass

## Explore Further

- [MinIO STS Quickstart Guide](https://min.io/docs/minio/linux/developers/security-token-service.html)