16. (1) Subject to subsection (2), a grantee shall not request the withholding or withdrawal of medical treatment from the grantor unless—
(a) the grantee has consulted a medical practitioner about—
(i) the nature of the grantor's illness;
(ii) any alternative forms of treatment that may be available to the grantor; and
(iii) the consequences to the grantor of remaining untreated; and
(b) the grantee believes on reasonable grounds that if the grantor—
(i) were capable of making a rational judgment; and
(ii) were to give serious consideration to his or her own health and wellbeing;
the grantor would request the withholding or withdrawal of medical treatment from himself or herself.
(2) Where the grantee is—
(a) aware the grantor has made a direction; and
(b) not aware that the direction has been revoked;
the grantee may request the withholding or withdrawal of medical treatment from the grantor in accordance with the direction.