  
  
  @util.registry.readers("spacy.Corpus.v1")
  def create_docbin_reader(
      path: Path,
      gold_preproc: bool,
      max_length: int = 0,
      limit: int = 0,
      augmenter: Optional[Callable] = None,
  ) -> Callable[["Language"], Iterable[Example]]:
 
</s> remove     assert nlp2.config["corpora"]["train"]["path"] == ""
 </s> add     assert nlp2.config["corpora"]["train"]["path"] is None </s> remove     assert interpolated["corpora"]["train"]["path"] == ""
 </s> add     assert interpolated["corpora"]["train"]["path"] is None </s> remove train = ""
dev = ""
 </s> add train = null
dev = null </s> remove train = ""
dev = ""
 </s> add train = null
dev = null
    path: Optional[Path],
  
  
  @util.registry.readers("spacy.Corpus.v1")
  def create_docbin_reader(
    path: Optional[Path],
      gold_preproc: bool,
      max_length: int = 0,
      limit: int = 0,
      augmenter: Optional[Callable] = None,
  ) -> Callable[["Language"], Iterable[Example]]:
keep keep keep keep replace keep keep keep keep keep
 Make corpus paths default to None and improve errors 
spacy/training/corpus.py