code: def destinations(self, cluster='main'):
          
          if not self.config.has_section(cluster):
              raise SystemExit("Cluster '%s' not defined in %s"
                               % (cluster, self.config_file))
          destinations = self.config.get(cluster, 'destinations')
          return destinations.replace(' ', '').split(',')
docs: Return a list of destinations for a cluster.