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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 refresh(self, include_fields=None, exclude_fields=None, extra_fields=None):
 """ Refresh the bug with the latest data from bugzilla """

        # pylint: disable=protected-access
        r = self.bugzilla._getbug(self.bug_id,
            include_fields=include_fields, exclude_fields=exclude_fields,
            extra_fields=self._bug_fields + (extra_fields or []))
        # pylint: enable=protected-access
        self._update_dict(r)