protected AtomicLong documentSize = new AtomicLong(0);

    /** Total execution time for all operations */
    protected volatile long executeTime = 0;

    /** List of documents waiting to be indexed */
    protected final DocList docList = new DocList();

    /** Maximum size of document requests in bytes */
    protected long maxDocumentRequestSize;

		return FileInfo{}, errFileVersionNotFound
	}
	fi.NumVersions = nonFreeVersions
	return fi, err
}

// ListVersions lists current versions, and current deleted
// versions returns error for unexpected entries.
// showPendingDeletes is set to true if ListVersions needs to list objects marked deleted
// but waiting to be replicated
func (x xlMetaV2) ListVersions(volume, path string, allParts bool) ([]FileInfo, error) {

    int len = sequence.length();
    int first;
    int last;

    for (first = 0; first < len; first++) {
      if (!matches(sequence.charAt(first))) {
        break;
      }
    }
    for (last = len - 1; last > first; last--) {
      if (!matches(sequence.charAt(last))) {
        break;
      }
    }

    return sequence.subSequence(first, last + 1).toString();
  }

  /**

		r.Method == http.MethodPut
}

// Authorization type.
//
//go:generate stringer -type=authType -trimprefix=authType $GOFILE
type authType int

// List of all supported auth types.
const (
	authTypeUnknown authType = iota
	authTypeAnonymous
	authTypePresigned
	authTypePresignedV2
	authTypePostPolicy
	authTypeStreamingSigned
	authTypeSigned

Now use the parameter `callbacks` in *your API's path operation decorator* to pass the attribute `.routes` (that's actually just a `list` of routes/*path operations*) from that callback router:

{* ../../docs_src/openapi_callbacks/tutorial001.py hl[35] *}

/// tip

Here you saw how to use multiple **workers** to **parallelize** the execution of the application, take advantage of **multiple cores** in the CPU, and be able to serve **more requests**.

From the list of deployment concepts from above, using workers would mainly help with the **replication** part, and a little bit with the **restarts**, but you still need to take care of the others:

* **Security - HTTPS**

Agora use o parâmetro `callbacks` no decorador da *operação de rota de sua API* para passar o atributo `.routes` (que é na verdade apenas uma `list` de rotas/*operações de rota*) do roteador de callback que você criou acima:

{* ../../docs_src/openapi_callbacks/tutorial001.py hl[35] *}

/// tip | Dica

///

### Adım 5: İçeriği Geri Döndürün

{* ../../docs_src/first_steps/tutorial001.py hl[8] *}

Bir `dict`, `list` veya `str`, `int` gibi tekil değerler döndürebilirsiniz.

Ayrıca, Pydantic modelleri de döndürebilirsiniz (bu konu ileriki aşamalarda irdelenecektir).

import java.util.Collection;
import java.util.Comparator;
import java.util.Currency;
import java.util.Deque;
import java.util.HashMap;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.List;
import java.util.ListIterator;
import java.util.Locale;
import java.util.Map;
import java.util.NavigableMap;
import java.util.NavigableSet;
import java.util.PriorityQueue;
import java.util.Queue;

		// ListObjectsV2M
		router.Methods(http.MethodGet).
			HandlerFunc(s3APIMiddleware(api.ListObjectsV2MHandler)).
			Queries("list-type", "2", "metadata", "true")
		// ListObjectsV2
		router.Methods(http.MethodGet).
			HandlerFunc(s3APIMiddleware(api.ListObjectsV2Handler)).
			Queries("list-type", "2")
		// ListObjectVersions
		router.Methods(http.MethodGet).
			HandlerFunc(s3APIMiddleware(api.ListObjectVersionsMHandler)).