code: def test_weighting_combos(self, kwargs, tokenized_docs, groups):
      vectorizer = representations.GroupVectorizer(**kwargs)
      _ = vectorizer.fit(tokenized_docs, groups)
      _ = vectorizer.weighting
  
imports: import pytest
  import numpy
  from scipy.sparse import coo_matrix
  from textacy import extract, representations
label_desc: Use image node_id 1 for calling the TestGroupVectorizer obj's underlying member method code with example usage: obj.test_weighting_combos(kwargs, tokenized_docs, groups) without return types