Does Article 1(1)(a) of Council Directive 2001/23/EC of 12 March 2001 on the approximation of the laws of the Member States relating to the safeguarding of employees’ rights in the event of transfers of undertakings, businesses or parts of undertakings or businesses, and therefore the content of the directive, apply to a case in which a Notary, a public official who, in turn, is the private employer of the staff working for him, that relationship as employer being governed by general employment law and by the sectoral collective agreement, who replaces the previous departing Notary, taking over his Protocol, and who continues to provide that service at the same workplace, with the same material facilities, and who takes on the staff who worked for the previous Notary who ran that practice?