code: def test_composition3():
      sa = analysis.RegexTokenizer() | analysis.StopFilter()
      assert sa.__class__.__name__ == "CompositeAnalyzer"
  
imports: from __future__ import with_statement
  import pytest
  from whoosh import analysis, fields, qparser
  from whoosh.compat import b, u, unichr
  from whoosh.compat import dumps
  from whoosh.filedb.filestore import RamStorage
label_desc: Use image node_id 6 for calling a global function with example usage: test_composition3() without return types