EnsembleSpec<TreeSpec> miningSpec = new EnsembleSpec<TreeSpec>( modelSchema, models );
LOG.debug( "creating: {}, input: {}, output: {}", new Object[]{miningSpec, modelSchema.getInputFields(),
modelSchema.getDeclaredFields()} );
SelectionStrategy strategy = PMMLUtil.getSelectionStrategy( model );
miningSpec.setSelectionStrategy( strategy );
tail = new ParallelEnsembleAssembly( tail, miningSpec );