code: def http_proxy(self, proxy, proxy_port, user=None, password=None):
          
          self.update(
              antivirus_http_proxy=proxy,
              antivirus_proxy_port=proxy_port,
              antivirus_proxy_user=user if user else '',
              antivirus_proxy_password=password if password else '',
              antivirus_http_proxy_enabled=True)
docs: .. versionadded:: 0.5.7
              Requires SMC and engine version >= 6.4
          
          Set http proxy settings for Antivirus updates.
          
          :param str proxy: proxy IP address
          :param str,int proxy_port: proxy port
          :param str user: optional user for authentication