# Dependencies - `Depends()` and `Security()`

## `Depends()`

Dependencies are handled mainly with the special function `Depends()` that takes a callable.

Here is the reference for it and its parameters.

You can import it directly from `fastapi`:

```python
from fastapi import Depends
```

::: fastapi.Depends

## `Security()`

import org.codelibs.fess.app.web.api.admin.dict.BaseSearchDictBody;

/**
 * Search request body for Kuromoji dictionary administration.
 * Extends BaseSearchDictBody with Kuromoji dictionary-specific search parameters.
 */
public class SearchBody extends BaseSearchDictBody {

    /**
     * Default constructor for SearchBody.
     */
    public SearchBody() {
        super();
    }

import org.codelibs.fess.app.web.api.admin.BaseSearchBody;

/**
 * Search request body for elevate word administration.
 * Extends BaseSearchBody with elevate word-specific search parameters.
 */
public class SearchBody extends BaseSearchBody {

    /** The elevate word ID to search for. */
    public String id;

    /**
     * Default constructor for SearchBody.
     */

import org.codelibs.fess.app.web.api.admin.BaseSearchBody;

/**
 * Search request body for crawling information administration.
 * Extends BaseSearchBody with crawling information-specific search parameters.
 */
public class SearchBody extends BaseSearchBody {

    /** The crawling session ID to search for. */
    public String sessionId;

    /**
     * Default constructor for SearchBody.
     */

import jcifs.Encodable;
import jcifs.internal.util.SMBUtil;

/**
 * SMB2 Transform Header for encrypted messages
 *
 * This header is used to encrypt SMB2/SMB3 messages and provides the necessary
 * cryptographic parameters for decryption including the nonce, session ID, and
 * authentication tag.
 *
 * @author mbechler
 */
public class Smb2TransformHeader implements Encodable {

    /**

 */
public interface DataStore {

    /**
     * Store the data.
     * @param config The data configuration.
     * @param callback The callback.
     * @param initParamMap The initial parameters.
     */
    void store(DataConfig config, IndexUpdateCallback callback, DataStoreParams initParamMap);

    /**
     * Stop the data store.
     */
    void stop();

import org.codelibs.fess.app.web.api.admin.BaseSearchBody;

/**
 * Search request body for boost document administration.
 * Extends BaseSearchBody with boost document-specific search parameters.
 */
public class SearchBody extends BaseSearchBody {

    /** The URL expression pattern to search for in boost documents. */
    public String urlExpr;

import org.codelibs.fess.app.web.api.admin.BaseSearchBody;

/**
 * Search request body for access token administration.
 * Extends BaseSearchBody with access token-specific search parameters.
 */
public class SearchBody extends BaseSearchBody {

    /** The access token ID to search for. */
    public String id;

    /**
     * Default constructor for SearchBody.
     */

import org.codelibs.fess.app.web.api.admin.dict.BaseSearchDictBody;

/**
 * Search request body for protected words dictionary administration.
 * Extends BaseSearchDictBody with protected words dictionary-specific search parameters.
 */
public class SearchBody extends BaseSearchDictBody {

    /**
     * Default constructor for SearchBody.
     */
    public SearchBody() {
        super();
    }

import org.codelibs.fess.app.web.api.admin.dict.BaseSearchDictBody;

/**
 * Search request body for stemmer override dictionary administration.
 * Extends BaseSearchDictBody with stemmer override dictionary-specific search parameters.
 */
public class SearchBody extends BaseSearchDictBody {

    /**
     * Default constructor for SearchBody.
     */
    public SearchBody() {
        super();
    }