code: func WithConfig(conf NNConfig) TrainerConsOpt {
  	f := func(t *Trainer) {
  		t.nn.NNConfig = conf
  		t.nn.dict = t.corpus
  		t.nn.transitions = t.ts
  		t.EvalPerIter = conf.EvalPerIteration
  	}
  	return f
  }
docs: // WithConfig sets up a *Trainer with a NNConfig