@property
  def instances(self):
    with self._condition:
      return set(self._instances)
Add a new group to the namelist. Any variables added after this are
dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/tools/devappserver2/server.py/AutoScalingServer.instances--crossover with--dataset/ETHPy150Open OpenMDAO/OpenMDAO/openmdao/util/namelist_util.py/Namelist.add_group