(1) When the ownership and other real rights over one and the same thing have become rested in one and the same person, such real rights shall lapse; provided, this shall not apply if the real rights form the object of a right of a third party.
(2) The preceding paragraph shall apply mutatis mutandis to where a real right other than ownership and other rights having such right for its object, has become rested in one and the same person.
(3) The preceding two paragraphs shall not apply to possessory rights.