Return just the highstate or the errors

def compile_highstate(self):
        '''
        Return just the highstate or the errors
        '''
        err = []
        top = self.get_top()
        err += self.verify_tops(top)
        matches = self.top_matches(top)
        high, errors = self.render_highstate(matches)
        err += errors

        if err:
            return err

        return high