An advance directive may contain a statement by a declarant that the declarant consents to the gift of all or any part of the declarant’s body for any one or more of the purposes specified in Title 4, Subtitle 5 of the Estates and Trusts Article. Notwithstanding any other provision of law, an anatomical gift in an advance directive is valid and effective for all purposes under Title 4, Subtitle 5 of the Estates and Trusts Article, including the immunity from civil or criminal liability set forth in § 4–514 of the Estates and Trusts Article.