code: def resolve(self, engine):
          
          if not self.resolved_value:
              result = self.make_request(
                  ElementNotFound,
                  href=self.get_relation('resolve'),
                  params={'for': engine})
  
              self.resolved_value = result.get('resolved_value')
          return self.resolved_value
docs: Resolve this Alias to a specific value. Specify the
          engine by name to find it's value.
  
          ::
  
              alias = Alias('$$ Interface ID 0.ip')
              alias.resolve('smcpython-fw')
  
          :param str engine: name of engine to resolve value
          :raises ElementNotFound: if alias not found on engine
          :return: alias resolving values
          :rtype: list