Any general power, whether exercisable by will, by deed, by will or deed, or otherwise, to appoint property, whether real or personal or both, may be released or disclaimed by the person or persons having such power, with or without consideration, wholly or partially. Any such power may be released or disclaimed with respect to the whole or any part of the property subject thereto; and any such power may also be released or disclaimed in such manner as to reduce, limit, or restrict the persons or objects, or classes of persons or objects, to or among any one or more of whom, but no others, the property subject to such power may be appointed by an exercise thereof, as fully as the creator of such power himself could have so reduced, limited or restricted the same and with like effect as if he had.