class_docstr: Vocabulary containing character-level information.
class_docstr_tok: ["Vocabulary","containing","character-level","information","."]
code: def word_to_char_ids(self, word):
      if word in self._word_to_id:
          return self._word_char_ids[self._word_to_id[word]]
      else:
          return self._convert_word_to_char_ids(word)
  
imports: import random
  import numpy
  from textattack.shared.utils import LazyLoader
label_desc: Use image node_id 5 for calling the CharsVocabulary obj's underlying member method code with example usage: obj.word_to_char_ids(word) and returns: self, self