docstr: Test initiation of default character sets
docstr_tok: ["Test","initiation","of","default","character","sets"]
code: def test_default_character_sets(self):  # pylint: disable=no-self-use
      """Test initiation of default character sets"""
      _ = IPAPhonemes()
      _ = Graphemes()
  
file_path: TTS/tests/text_tests/test_characters.py
imports: import unittest
  from TTS.tts.utils.text.characters import BaseCharacters, BaseVocabulary, Graphemes, IPAPhonemes
label_desc: Use image node_id 2 for calling the BaseCharacterTest obj's underlying member method code with example usage: obj.test_default_character_sets() without return types