code: def test_get_ranks_meta(self):
      corpus = build_hamlet_jz_corpus_with_meta()
      self.assertEquals(
          ZScores(corpus)
          .set_term_ranker(OncePerDocFrequencyRanker)
          .set_categories("hamlet")
          .get_name(),
          "Z-Score from Welch's T-Test",
      )
  
file_path: scattertext/scattertext/test/test_ZScores.py
imports: from unittest import TestCase
  import pandas
  import numpy
  from scattertext import OncePerDocFrequencyRanker
  from scattertext.termscoring.ZScores import ZScores
  from scattertext.test.test_termDocMatrixFactory import build_hamlet_jz_corpus, build_hamlet_jz_corpus_with_meta
label_desc: Use image node_id 4 for calling the TestZScores obj's underlying member method code with example usage: obj.test_get_ranks_meta() without return types