code: def getMaturedSwarmGenerations(self):
      
      # Return results go in this list
      result = []
  
  
      # For each of the swarm generations which have had model result updates
      # since the last time we were called, see which have completed.
      modifiedSwarmGens = sorted(self._modifiedSwarmGens)
  
      # Walk through them in order from lowest to highest generation index
      for key in modifiedSwarmGens:
        (swarmId, genIdx) = key
  
        # Skip it if we've already reported on it. This should happen rarely, if
        #  ever. It means that some worker has started and completed a model in
        #  this generation after we've determined that the generation has ended.
        if key in self._maturedSwarmGens:
          self._modifiedSwarmGens.remove(key)
          continue
  
        # If the previous generation for this swarm is not complete yet, don't
        #  bother evaluating this one.
        if (genIdx >= 1) and not (swarmId, genIdx-1) in self._maturedSwarmGens:
          continue
  
        # We found a swarm generation that had some results reported since last
        # time, see if it's complete or not
        (_, _, errScores, completedFlags, maturedFlags) = \
                                  self.getParticleInfos(swarmId, genIdx)
        maturedFlags = numpy.array(maturedFlags)
        numMatured = maturedFlags.sum()
        if numMatured >= self._hsObj._minParticlesPerSwarm \
              and numMatured == len(maturedFlags):
          errScores = numpy.array(errScores)
          bestScore = errScores.min()
  
          self._maturedSwarmGens.add(key)
          self._modifiedSwarmGens.remove(key)
          result.append((swarmId, genIdx, bestScore))
  
      # Return results
      return result
docs: Return a list of swarm generations that have completed and the
      best (minimal) errScore seen for each of them.
  
      Parameters:
      ---------------------------------------------------------------------
      retval:  list of tuples. Each tuple is of the form:
                (swarmId, genIdx, bestErrScore)