code: def test_charset_pickeability():
      from whoosh.support import charset
  
      charmap = charset.charset_table_to_dict(charset.default_charset)
      ana = analysis.StandardAnalyzer() | analysis.CharsetFilter(
          charmap
      )
      _ = dumps(ana, -1)
  
      ana = analysis.CharsetTokenizer(charmap)
      _ = dumps(ana, -1)
  
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 29 for calling a global function with example usage: test_charset_pickeability() without return types