code: def __call__(self, text) -> List[str]:
      graphemes = [x for x in self._text_to_jaso(text)]
      graphemes = self._remove_non_korean_characters(graphemes)
  
      if self.no_space:
          graphemes = list(filter(lambda s: s != " ", graphemes))
      else:
          graphemes = [
              x if x != " " else self.space_symbol for x in graphemes
          ]
      return graphemes
  
imports: import logging
  import re
  import warnings
  from pathlib import Path
  from typing import Iterable, List, Optional, Union
  import g2p_en
  import jamo
  from packaging.version import parse
  from typeguard import check_argument_types
  from espnet2.text.abs_tokenizer import AbsTokenizer
label_desc: Use image node_id 4 for calling the Jaso obj's underlying member method code with example usage: obj.__call__(text) and returns: graphemes