You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: request-example.go
    path of file: ./repos/sealer/vendor/github.com/pkg/sftp
    
    the code of the file until where you have to start completion: package sftp

// This serves as an example of how to implement the request server handler as
// well as a dummy backend 
    
func (fs *root) fetch(path string) (*memFile, error) {
	file, err := fs.lfetch(path)
	if err != nil {
		return nil, err
	}

	var count int
	for file.symlink != "" {
		if count++; count > maxSymlinkFollows {
			return nil, errTooManySymlinks
		}

		file, err = fs.lfetch(file.symlink)
		if err != nil {
			return nil, err
		}
	}

	return file, nil
}