Mas se você tem certeza que o conteúdo que você está retornando é **serializável com JSON**, você pode passá-lo diretamente para a classe de resposta e evitar o trabalho extra que o FastAPI teria ao passar o conteúdo pelo `jsonable_encoder` antes de passar para a classe de resposta.

{* ../../docs_src/custom_response/tutorial001b.py hl[2,7] *}

/// info | Informação

	if de.VersionID != "" {
		objInfoStr = fmt.Sprintf("%s version-id=%s", objInfoStr, de.VersionID)
	}
	return fmt.Sprintf("invalid data movement operation, source and destination pool are the same for %s", objInfoStr)
}

func isDataMovementOverWriteErr(err error) bool {
	var de DataMovementOverwriteErr
	return errors.As(err, &de)

        }

        @Override
        public void offerAll(String sessionId, List<OpenSearchUrlQueue> list) {
            // Do nothing in test
        }

        @Override
        public OpenSearchUrlQueue poll(String sessionId) {
            return null;
        }

        @Override
        public void saveSession(String sessionId) {
            // Do nothing in test
        }

        @Override

        }
      } finally {
        // Important to null this out here - if we did *not* execute inline, we might still
        // run() on the same thread that called execute() - such as in a thread pool, and think
        // that it was happening inline. As a side benefit, avoids holding on to the Thread object
        // longer than necessary.
        submitting = null;
      }
    }

      }
    }

    @GuardedBy("this")
    void drainKeyReferenceQueue(ReferenceQueue<K> keyReferenceQueue) {
      Reference<? extends K> ref;
      int i = 0;
      while ((ref = keyReferenceQueue.poll()) != null) {
        @SuppressWarnings("unchecked")
        E entry = (E) ref;
        map.reclaimKey(entry);
        if (++i == DRAIN_MAX) {
          break;
        }
      }
    }

Você pode criar e utilizar variáveis de ambiente no terminal, sem precisar utilizar Python:

//// tab | Linux, macOS, Windows Bash

<div class="termy">

```console

func (field *Field) setupNewValuePool() {
	if field.Serializer != nil {
		serializerValue := reflect.Indirect(reflect.ValueOf(field.Serializer))
		serializerType := serializerValue.Type()
		field.NewValuePool = &sync.Pool{
			New: func() interface{} {
				si := reflect.New(serializerType)
				si.Elem().Set(serializerValue)
				return &serializer{
					Field:      field,
					Serializer: si.Interface().(SerializerInterface),
				}

	}
	if err != nil {
		return res, toStorageErr(err)
	}

	defer storageRenameDataRPC.PutResponse(resp)
	return *resp, nil
}

// where we keep old *Readers
var readMsgpReaderPool = bpool.Pool[*msgp.Reader]{New: func() *msgp.Reader { return &msgp.Reader{} }}

// mspNewReader returns a *Reader that reads from the provided reader.
// The reader will be buffered.
// Return with readMsgpReaderPoolPut when done.

			})
		if err != nil {
			t.Fatalf("Erasure Object upload failed: <ERROR> %s", err)
		}
		versions[i] = objInfo.VersionID
	}

	// Remove and check the version in the second pool, then
	// remove and check the version in the first pool
	for testIdx, vid := range []string{versions[1], versions[0]} {
		names := []ObjectToDelete{
			{
				ObjectV: ObjectV{
					ObjectName: objectName,
					VersionID:  vid,
				},

   * @return the head of the request queue
   */
  @Throws(InterruptedException::class)
  public fun takeRequest(
    timeout: Long,
    unit: TimeUnit,
  ): RecordedRequest? = requestQueue.poll(timeout, unit)

  /**
   * Scripts [response] to be returned to a request made in sequence. The first request is
   * served by the first enqueued response; the second request by the second enqueued response; and