  path = ${paths.dev}
  
  [training.batcher]
  @batchers = "spacy.batch_by_words.v1"
  size = 666
  
  [nlp]
 
</s> remove [training.corpus.dev]
 </s> add [corpora.dev] </s> remove gold_preproc = ${training.read_train:gold_preproc}
 </s> add gold_preproc = ${corpora.train.gold_preproc} </s> remove 
[training.corpus]

[training.corpus.train]
@readers = "spacy.Corpus.v1"
path = ${paths:train}
gold_preproc = true
max_length = 0
limit = 0

[training.corpus.dev]
@readers = "spacy.Corpus.v1"
path = ${paths:dev}
gold_preproc = ${training.read_train:gold_preproc}
max_length = 0
limit = 0
 </s> add dev_corpus = "corpora.dev"
train_corpus = "corpora.train"
[training]

  path = ${paths.dev}
  
[training]

  [training.batcher]
  @batchers = "spacy.batch_by_words.v1"
  size = 666
  
  [nlp]
keep add keep keep keep keep keep
 generalize corpora, dot notation for dev and train corpus 
spacy/tests/serialize/test_serialize_config.py