* symmetry. Moreover, we don't want to reconstruct a native type variable {@code <A>} using our
   * implementation unless some of its bounds have changed in resolution. This avoids creating
   * unequal TypeVariable implementation unnecessarily. When the bounds do change, however, it's
   * fine for the synthetic TypeVariable to be unequal to any native TypeVariable anyway.
   */

			Bucket: bucket,
			Object: object,
			Err:    err,
		}
	}

	opts.VersionID = vid
	opts.Versioned = versioned
	opts.VersionSuspended = versionSuspended

	// For directory objects skip creating new versions.
	if isDirObject(object) && vid == "" {
		opts.VersionID = nullVersionID
	}

	return opts, nil
}

   * symmetry. Moreover, we don't want to reconstruct a native type variable {@code <A>} using our
   * implementation unless some of its bounds have changed in resolution. This avoids creating
   * unequal TypeVariable implementation unnecessarily. When the bounds do change, however, it's
   * fine for the synthetic TypeVariable to be unequal to any native TypeVariable anyway.
   */

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

// Package bufio implements buffered I/O. It wraps an io.Reader or io.Writer
// object, creating another object (Reader or Writer) that also implements
// the interface but provides buffering and some help for textual I/O.
package bufio

import (
	"bytes"
	"errors"
	"io"
	"strings"
	"unicode/utf8"
)

	if srcInfo.versionOnly {
		versionID = dstOpts.VersionID
		// preserve destination versionId if specified.
		if versionID == "" {
			versionID = mustGetUUID()
			fi.IsLatest = true // we are creating a new version so this is latest.
		}
	}

	modTime = UTCNow() // We only preserve modTime if dstOpts.MTime is true.
	// in all other cases mtime is latest.

		srcInfo.metadataOnly = true
		srcInfo.keyRotation = true
	} else {
		if isSourceEncrypted || isTargetEncrypted {
			// We are not only copying just metadata instead
			// we are creating a new object at this point, even
			// if source and destination are same objects.
			if !srcInfo.keyRotation {
				srcInfo.metadataOnly = false
			}
		}

		// Calculate the size of the target object

* 📝 Update docs for `ORJSONResponse` with details about improving performance. PR [#2615](https://github.com/tiangolo/fastapi/pull/2615) by [@falkben](https://github.com/falkben).
* 📝 Add docs for creating a custom Response class. PR [#5331](https://github.com/tiangolo/fastapi/pull/5331) by [@tiangolo](https://github.com/tiangolo).