docs: @Override
  	public double getInclusionProbability(Instance instance) {
  		Iterator<Map.Entry<DensityGrid, Boolean>> gridIter = grids.entrySet().iterator();
  		
  		while(gridIter.hasNext())
  		{
  			Map.Entry<DensityGrid, Boolean> grid = gridIter.next();
  			DensityGrid dg = grid.getKey();
  			if(dg.getInclusionProbability(instance) == 1.0)
  				return 1.0;
  		}
  		
  		return 0.0;
  	}