if err := b.startCheck(sectionAnswers); err != nil {
		return err
	}
	b.section = sectionAnswers
	return nil
}

// StartAuthorities prepares the builder for packing Authorities.
func (b *Builder) StartAuthorities() error {
	if err := b.startCheck(sectionAuthorities); err != nil {
		return err
	}
	b.section = sectionAuthorities
	return nil
}