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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 _check_update_fw(self, tenant_id, drvr_name):
 """Update the Firewall config by calling the driver. This function calls the device manager routine to update the device with modified FW cfg. """

        if self.fwid_attr[tenant_id].is_fw_complete():
            fw_dict = self.fwid_attr[tenant_id].get_fw_dict()
            self.modify_fw_device(tenant_id, fw_dict.get('fw_id'), fw_dict)