def add_email_grant(self, permission, email_address):
        acl = self.get_acl()
        acl.add_email_grant(permission, email_address)
        self.set_acl(acl)
Convenience method that provides a quick way to add an email grant to a
dataset/ETHPy150Open yyuu/botornado/boto/gs/key.py/Key.add_email_grant