In this case, you can return the file path directly from your *path operation* function.

## Custom response class { #custom-response-class }

You can create your own custom response class, inheriting from `Response` and using it.

        final Method method = Hoge.class.getMethod("foo", Set.class, Map.class);
        ParameterizedClassDesc desc = ParameterizedClassDescFactory.createParameterizedClassDesc(method, 0, map);
        assertThat(desc.getRawClass(), is(sameClass(Set.class)));
        ParameterizedClassDesc[] args = desc.getArguments();
        assertThat(args.length, is(1));

import org.mockito.junit.jupiter.MockitoExtension;

import jcifs.CIFSContext;
import jcifs.NameServiceClient;
import jcifs.NetbiosAddress;
import jcifs.config.BaseConfiguration;

@ExtendWith(MockitoExtension.class)
class NbtAddressTest {

    private Name mockName;
    @Mock
    private CIFSContext mockContext;
    @Mock
    private NameServiceClient mockNameServiceClient;
    @Mock
    private BaseConfiguration mockConfig;

        }).when(mockDcerpcHandle).sendrecv(any(MsrpcLsarClose.class));

        // Close once
        handle.close();

        // Act
        // Try to close again
        handle.close();

        // Assert
        // Verify sendrecv was called once for open and only once for close
        verify(mockDcerpcHandle, times(1)).sendrecv(any(MsrpcLsarOpenPolicy2.class));

import org.dbflute.optional.OptionalEntity;

import jakarta.annotation.Resource;

/**
 * Service for managing stopwords.
 * This class provides methods to interact with stopwords dictionaries,
 * including retrieving, storing, and deleting stopwords.
 */
public class StopwordsService {
    /** The dictionary manager for accessing dictionary files. */
    @Resource
    protected DictionaryManager dictionaryManager;

import org.dbflute.optional.OptionalEntity;

import jakarta.annotation.Resource;

/**
 * Service for managing synonyms.
 * This class provides methods to interact with synonym dictionaries,
 * including retrieving, storing, and deleting synonyms.
 */
public class SynonymService {
    /** The dictionary manager for accessing dictionary files. */
    @Resource
    protected DictionaryManager dictionaryManager;

import org.codelibs.fess.util.ComponentUtil;
import org.codelibs.jcifs.smb.SID;

import jakarta.annotation.PostConstruct;

/**
 * Helper class for Samba-related operations.
 */
public class SambaHelper {

    private static final Logger logger = LogManager.getLogger(SambaHelper.class);

    /**
     * SID type for an alias.
     */
    public static final int SID_TYPE_ALIAS = 4;

    /**

    private static final long serialVersionUID = 1L;
    protected static final Class<?> suppressUnusedImportLocalDateTime = LocalDateTime.class;

    // ===================================================================================
    //                                                                           Attribute

/**
 * Query command for prefix queries.
 */
public class PrefixQueryCommand extends QueryCommand {

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

    private static final Logger logger = LogManager.getLogger(PrefixQueryCommand.class);

    /** Flag to convert wildcard to lowercase. */
    protected boolean lowercaseWildcard = true;

It might be useful, for example, to return custom headers or cookies.

## Return a `Response` { #return-a-response }

In fact, you can return any `Response` or any sub-class of it.

/// tip

`JSONResponse` itself is a sub-class of `Response`.

///

And when you return a `Response`, **FastAPI** will pass it directly.