code: def get_data_link(self, instance, link):
          
          response = self.get_proto('/links/{}/{}'.format(instance, link))
          message = yamcsManagement_pb2.LinkInfo()
          message.ParseFromString(response.content)
          return Link(message)
docs: Gets a single data link.
  
          :param str instance: A Yamcs instance name.
          :param str link: The name of the data link.
          :rtype: .Link