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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 decode_content(self):
 """Return the best possible representation of the response body. """

        ct = self.headers.get('content-type')
        if ct:
            ct, options = parse_options_header(ct)
            charset = options.get('charset')
            if ct in JSON_CONTENT_TYPES:
                return self.json()
            elif ct.startswith('text/'):
                return self.text
            elif ct == FORM_URL_ENCODED:
                return parse_qsl(self.content.decode(charset),
                                 keep_blank_values=True)
        return self.content