}

	// Get start part index and offset.
	partIndex, partOffset, err := fi.ObjectToPartOffset(ctx, startOffset)
	if err != nil {
		return InvalidRange{startOffset, length, fi.Size}
	}

	// Calculate endOffset according to length
	endOffset := startOffset
	if length > 0 {
		endOffset += length - 1
	}

	// Get last part index to read given length.

		return partSize, err
	}

	configuredPartSize := minPartSize
	// Use floats for part size for all calculations to avoid
	// overflows during float64 to int64 conversions.
	partSizeFlt := float64(objectSize / maxPartsCount)
	partSizeFlt = math.Ceil(partSizeFlt/float64(configuredPartSize)) * float64(configuredPartSize)

	// Part size.
	partSize = int64(partSizeFlt)
	if partSize == 0 {
		return minPartSize, nil
	}

                """
            ),
        ] = None,
        deprecated: Annotated[
            bool | None,
            Doc(
                """
                Mark all *path operations* in this router as deprecated.

                It will be added to the generated OpenAPI (e.g. visible at `/docs`).

                Read more about it in the

// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful

Pero cuando los declaras con tipos de Python (en el ejemplo anterior, como `int`), son convertidos a ese tipo y validados respecto a él.

Todo el mismo proceso que se aplica para los parámetros de path también se aplica para los parámetros de query:

* Soporte del editor (obviamente)
* <dfn title="convirtiendo el string que viene de un request HTTP en datos de Python">"parsing"</dfn> de datos
* Validación de datos

Pero eso aún no es tan útil. Vamos a hacer que nos dé el usuario actual.

## Crear un modelo de usuario { #create-a-user-model }

Primero, vamos a crear un modelo de usuario con Pydantic.

De la misma manera que usamos Pydantic para declarar cuerpos, podemos usarlo en cualquier otra parte:

{* ../../docs_src/security/tutorial002_an_py310.py hl[5,12:6] *}

## Crear una dependencia `get_current_user` { #create-a-get-current-user-dependency }

	found := make(map[string]struct{}, len(d.Cache))

	// Mark all children recursively
	var mark func(entry dataUsageEntry)
	mark = func(entry dataUsageEntry) {
		for k := range entry.Children {
			found[k] = struct{}{}
			if ch, ok := d.Cache[k]; ok {
				mark(ch)
			}
		}
	}
	found[top] = struct{}{}
	mark(*topE)

	// Delete all entries not found.
	for k := range d.Cache {

                Enumeration<?> parts = nameSequence.getObjects();
                while (parts.hasMoreElements()) {
                    Object part = parts.nextElement();
                    DERGeneralString stringPart = ASN1Util.as(DERGeneralString.class, part);
                    nameBuilder.append(stringPart.getString());
                    if (parts.hasMoreElements()) {
                        nameBuilder.append('/');

			errCode = ErrInvalidMaxParts
			return uploadID, partNumberMarker, maxParts, encodingType, errCode
		}
	} else {
		maxParts = maxPartsList
	}

	if values.Get("part-number-marker") != "" {
		if partNumberMarker, err = strconv.Atoi(values.Get("part-number-marker")); err != nil {
			errCode = ErrInvalidPartNumberMarker
			return uploadID, partNumberMarker, maxParts, encodingType, errCode
		}
	}

        when(tree.send(any(Trans2FindFirst2.class), any(Trans2FindFirst2Response.class))).thenAnswer((InvocationOnMock inv) -> {
            Trans2FindFirst2Response resp = inv.getArgument(1);
            resp.received(); // mark as received
            throw new SmbException(NtStatus.NT_STATUS_NO_SUCH_FILE, (Throwable) null);
        });

        DirFileEntryEnumIterator1 it = new DirFileEntryEnumIterator1(tree, parent, "*", null, 0);