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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 matches(self, txt: str) -> bool: """Determine whether txt matches pattern :param txt: text to check :return: True if match """

        # rval = ref.getText()[1:-1].encode('utf-8').decode('unicode-escape')
        if r'\\u' in self.pattern_re.pattern:
            txt = txt.encode('utf-8').decode('unicode-escape')
        match = self.pattern_re.match(txt)
        return match is not None and match.end() == len(txt)