This simple case is handled automatically by FastAPI because the return type annotation is the class (or a subclass of) `Response`.

And tools will also be happy because both `RedirectResponse` and `JSONResponse` are subclasses of `Response`, so the type annotation is correct.

### Annotate a Response Subclass

You can also use a subclass of `Response` in the type annotation:

```Python hl_lines="8-9"

	proxyMetadata := meshConfig.DefaultConfig.ProxyMetadata

	// support proxy.istio.io/config on the WorkloadGroup, in the WorkloadGroup spec
	for _, annotations := range []map[string]string{wg.Annotations, wg.Spec.Metadata.Annotations} {
		if pcYaml, ok := annotations[annotation.ProxyConfig.Name]; ok {
			if err := protomarshal.ApplyYAML(pcYaml, meshConfig.DefaultConfig); err != nil {
				return nil, err
			}

import org.codelibs.fess.mylasta.direction.FessConfig;
import org.codelibs.fess.util.ParameterUtil;
import org.dbflute.cbean.result.PagingResultBean;
import org.dbflute.optional.OptionalEntity;

import jakarta.annotation.Resource;

public class FileAuthenticationService {

    @Resource
    protected FileAuthenticationBhv fileAuthenticationBhv;

    @Resource
    protected FessConfig fessConfig;

import org.codelibs.fess.es.config.exentity.RoleType;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.dbflute.cbean.result.PagingResultBean;
import org.dbflute.optional.OptionalEntity;

import jakarta.annotation.Resource;

public class RoleTypeService {

    @Resource
    protected RoleTypeBhv roleTypeBhv;

    @Resource
    protected FessConfig fessConfig;

import org.codelibs.fess.dict.stopwords.StopwordsFile;
import org.codelibs.fess.dict.stopwords.StopwordsItem;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.dbflute.optional.OptionalEntity;

import jakarta.annotation.Resource;

public class StopwordsService {
    @Resource
    protected DictionaryManager dictionaryManager;

    @Resource
    protected FessConfig fessConfig;

import org.codelibs.fess.dict.synonym.SynonymFile;
import org.codelibs.fess.dict.synonym.SynonymItem;
import org.codelibs.fess.mylasta.direction.FessConfig;
import org.dbflute.optional.OptionalEntity;

import jakarta.annotation.Resource;

public class SynonymService {
    @Resource
    protected DictionaryManager dictionaryManager;

    @Resource
    protected FessConfig fessConfig;

            f"check that {type_} is a valid Pydantic field type. "
            "If you are using a return type annotation that is not a valid Pydantic "
            "field (e.g. Union[Response, dict, None]) you can disable generating the "
            "response model from the type annotation with the path operation decorator "
            "parameter response_model=None. Read more: "

7. Here the `response_model` is using a type annotation of a list of `Author` dataclasses.

    Again, you can combine `dataclasses` with standard type annotations.

8. Notice that this *path operation function* uses regular `def` instead of `async def`.

    As always, in FastAPI you can combine `def` and `async def` as needed.

import java.util.List;
import java.util.Locale;
import java.util.Map;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.fess.Constants;
import org.codelibs.fess.annotation.Secured;
import org.codelibs.fess.app.pager.FileAuthPager;
import org.codelibs.fess.app.service.FileAuthenticationService;
import org.codelibs.fess.app.service.FileConfigService;
import org.codelibs.fess.app.web.CrudMode;

import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.codelibs.fess.Constants;
import org.codelibs.fess.annotation.Secured;
import org.codelibs.fess.app.pager.ReqHeaderPager;
import org.codelibs.fess.app.service.RequestHeaderService;
import org.codelibs.fess.app.service.WebConfigService;
import org.codelibs.fess.app.web.CrudMode;