var header http.Header
	if etag != "" {
		header.Set("ETag", etag)
	}
	Range := &HTTPRangeSpec{Start: startOffset, End: startOffset + length}

	reader, err := api.GetObjectNInfo(ctx, bucket, object, Range, header, opts)
	if err != nil {
		return err
	}
	defer reader.Close()

	_, err = xioutil.Copy(writer, reader)
	return err

            if (!dfos.isInMemory()) {
                tempFile = dfos.getFile();
            }

            try (Reader reader = new InputStreamReader(getContentStream(dfos), enc)) {
                if (normalizeText) {
                    return TextUtil.normalizeText(reader)
                            .initialCapacity(initialBufferSize)
                            .maxAlphanumTermSize(maxAlphanumTermSize)

	AppendFile(ctx context.Context, volume string, path string, buf []byte) (err error)
	CreateFile(ctx context.Context, origvolume, olume, path string, size int64, reader io.Reader) error
	ReadFileStream(ctx context.Context, volume, path string, offset, length int64) (io.ReadCloser, error)
	RenameFile(ctx context.Context, srcVolume, srcPath, dstVolume, dstPath string) error

	}

	timeTierAction := auditTierActions(ctx, oi.TransitionedObject.Tier, length)
	reader, err := tgtClient.Get(ctx, oi.TransitionedObject.Name, remoteVersionID(oi.TransitionedObject.VersionID), gopts)
	if err != nil {
		return nil, err
	}
	closer := func() {
		timeTierAction(reader.Close())
	}
	return fn(reader, h, closer)
}

// RestoreRequestType represents type of restore.
type RestoreRequestType string

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

func (m *warmBackendMinIO) PutWithMeta(ctx context.Context, object string, r io.Reader, length int64, meta map[string]string) (remoteVersionID, error) {
	partSize, err := optimalPartSize(length)
	if err != nil {
		return remoteVersionID(""), err
	}

		requestorIsDerivedCredential = true
	}

	// Check if we are creating svc account for request sender.
	isSvcAccForRequestor := targetUser == requestorUser || targetUser == requestorParentUser

	var (
		targetGroups []string
		err          error
	)

	// If we are creating svc account for request sender, ensure that targetUser
	// is a real user (i.e. not derived credentials).
	if isSvcAccForRequestor {

        final List<CharMappingItem> itemList = new ArrayList<>();
        try (BufferedReader reader = new BufferedReader(new InputStreamReader(in, Constants.UTF_8))) {
            long id = 0;
            String line = null;
            while ((line = reader.readLine()) != null) {
                // Remove comments

	destObj := object
	if az.Prefix != "" {
		destObj = fmt.Sprintf("%s/%s", az.Prefix, object)
	}
	return destObj
}

func (az *warmBackendAzure) PutWithMeta(ctx context.Context, object string, r io.Reader, length int64, meta map[string]string) (remoteVersionID, error) {
	azMeta := map[string]*string{}
	for k, v := range meta {
		azMeta[k] = to.Ptr(v)
	}

// for our purposes and made a TokenReader. It forms the lowest level,
// turning text from readers into tokens.
type Tokenizer struct {
	tok  ScanToken
	s    *scanner.Scanner
	base *src.PosBase
	line int
	file *os.File // If non-nil, file descriptor to close.
}

func NewTokenizer(name string, r io.Reader, file *os.File) *Tokenizer {
	var s scanner.Scanner
	s.Init(r)

```

Read the new docs: [Query Parameter Models](https://fastapi.tiangolo.com/tutorial/query-param-models/).

#### `Header` Parameter Models

Use Pydantic models for `Header` parameters:

```python
from typing import Annotated

from fastapi import FastAPI, Header
from pydantic import BaseModel

app = FastAPI()


class CommonHeaders(BaseModel):
    host: str
    save_data: bool