code: def test_focus_biased_rank(doc: Doc):
      """
      Biasedrank should lead to different results from base textrank when focus is provided.
      """
      # given
      biased_rank = BiasedTextRankFactory()
      base_text_rank = BaseTextRankFactory()
  
      # when
      processed_doc = base_text_rank(doc)
      phrases = processed_doc._.phrases
  
      comparison_doc = biased_rank(doc)
      tr = comparison_doc._.textrank
      tr.change_focus("Manchester United", bias=10.0, default_bias=0.0)
      comparison_phrases = comparison_doc._.phrases
  
      # then
      assert tuple(p.text for p in phrases[:3]) != tuple(
          p.text for p in comparison_phrases[:3]
      )
  
imports: from spacy.tokens import Doc
  import sys
  from pytextrank.base import BaseTextRankFactory
  from pytextrank.biasedrank import BiasedTextRankFactory
label_desc: Use image node_id 2 for calling a global function with example usage: test_focus_biased_rank(doc) without return types