docs: def send_keys(self, text: str = 'cerium') -> None:
          '''Simulates typing keys.'''
          for char in text:
              if '\u4e00' <= char <= '\u9fff':
                  raise CharactersException(
                      f'Text cannot contain non-English characters, such as {char!r}.')
          text = re.escape(text)
          self._execute('-s', self.device_sn, 'shell',
                        'input', 'text', text)