code: def test_add_nprocess(self, corpus):
      datas = (
          ["This is one sentence.", "This is another sentence."],
          [
              ("This is sentence #1.", {"foo": "bar"}),
              ("This is sentence #2.", {"bat": "baz"}),
          ],
      )
      n_docs = corpus.n_docs
      for data in datas:
          corpus.add(data, n_process=2)
          assert corpus.n_docs > n_docs
          n_docs = corpus.n_docs
  
imports: import collections
  import itertools
  import numpy
  import pytest
  from spacy.tokens import Doc
  from textacy import Corpus
  from textacy import load_spacy_lang
label_desc: Use image node_id 3 for calling the TestCorpusMethods obj's underlying member method code with example usage: obj.test_add_nprocess(corpus) without return types