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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _get_text(self, text):
 """Returns the text content of `text`, with all multi-character tokens replaced with a single character. Substitutions are recorded in self._substitutes. :param text: text to get content from :type text: `Text` :rtype: `str` """

        tokens = text.get_tokens()
        for i, token in enumerate(tokens):
            if len(token) > 1:
                char = chr(self._char_code)
                substitute = self._substitutes.setdefault(token, char)
                if substitute == char:
                    self._char_code += 1
                tokens[i] = substitute
        return self._tokenizer.joiner.join(tokens)