// representation is used.
func appendNewName(dst []byte, f HeaderField, indexing bool) []byte {
	dst = append(dst, encodeTypeByte(indexing, f.Sensitive))
	dst = appendHpackString(dst, f.Name)
	return appendHpackString(dst, f.Value)
}

// appendIndexedName appends f and index i referring indexed name
// entry, as encoded in one of "Literal Header field - Indexed Name"