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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 html(self):
 """ Return an HTML representation of the snippet. """

        formatter = HtmlFormatter(
            cssclass=self.DIV_CSS_CLASS,
            linenos=True,
            linenostart=self._start_line,
            hl_lines=self._shift_lines(
                self._violation_lines,
                self._start_line
            ),
            lineanchors=self._src_filename
        )

        return pygments.format(self.src_tokens(), formatter)